Glow Worms at Sherwood Forest 2013
2013 Glow Worms - a detailed summary
A comparison of Glow Worm colonies at Clipstone Old Quarter and Great Orme in 2013
Clipstone Old Quarter female Glow Worm data 2013
 
Current research and survey work

We are currently continuing with our research, surveying for larvae at Clipstone Old Quarter. August and September represent the peak period of larval bioluminescence, but our surveys will continue until well into November again this year. Latest larval survey results continue to be published on this page.

The glowing season 2013 - a final update

This years glowing season rapidly declined and the last female was recorded on July 27th. This followed peak counts of 78 on July 5th, 81 on July 6th and a site record of 90 on July 7th. A full summary of the 2013 season can be accessed via the link above.

Clipstone Old Quarter and Great Orme comparison site counts

Jenni Cox's excellent work studying Glow Worms on the Great Orme at Llandudno, finally provided Martin Dale and ourselves with the opportunity to make a direct comparison of numbers and emergences at two different sites. Access our summary of this research work via the link above.

 
2013 Glow Worm sightings (Clipstone Old Quarter)
Glow Worms (both adults and larvae) are recorded as follows.....L = larva ..... M = male .....F = female
Note that the male count in the following table, also includes the 'in flight' flash which is characteristic of male Glow Worms.
 
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Date   Stage     Additional notes
................   L M. .F.      
January 2nd   0 0 0     No larvae found despite overcast conditions and a very mild recorded temperature of 10C at T2 this evening. Site visited from 19:50h-20:50h.
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January 3rd   0 0 0     No larvae found again this evening. Weather dry and overcast, with a very mild temperature of 10C at T2. The following sections were surveyed this evening, D, F, J, K, L and M. Site visited from 19:20h-20:15h.
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January 4th   0 0 0     No larvae found despite a temperature of 11C at T2. Weather, clearing skies, but slightly milder than the previous evening. Sections surveyed included D and J. Site visited from 18:30h-20:00h.
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January 5th   0 0 0     No larvae found. Weather, relatively mild but feeling cool with a recorded temperature of 7C at T2. Only the upper area of section J was surveyed. Site visited from 20:30h-21:15h.
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January 7th   0 0 0     No larvae found, despite mild conditions again this evening. Conditions were overcast, slightly breezy with a temperature of 8C at T2. Sections A, B, C, D, J, K, L and O were surveyed. Site visited from 19:30h-20:20h.
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January 29th   0 0 0     No larvae found this evening. Weather, overcast and windy, though sheltered at top of section J. Very mild with a recorded temperature of 12C at T2. Site visited from 19:20h-20:20h.
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February 9th   1 0 0     Single 22mm larvae found in hibernation, upside down under a large log during the day.
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March 3rd   0 0 0     Sections A, B, C and D checked for the first late afternoon/early evening walk surveying for larvae. Weather overcast and mild, site visited from 17:15h-18:00h. temperature of 8C at T2.
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March 31st   1 0 0     Single 14mm larvae found under wood during the day.
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April 4th   0 0 0     No larvae found. Weather clear and sunny, but feeling cold. Temperature at T2 6C. Site visited from 18h:30m-19h:30m. Sections A, B, C and D were surveyed.
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April 6th   0 0 0     No larvae found. Weather clear, sunny and fairly mild. Temperature at T2 was 9C. Site visited from 18h:00m-19h:20m. Sections A, B, C and D were surveyed.
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April 7th   0 0 0     No larvae found. Weather lightly overcast and fairly mild. Temperature at T2 was 8C. Sections A, B, C and D were surveyed. Site visited from 18h:30m-19h:35m.
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April 9th   0 0 0     No larvae found. Weather clear and fairly mild. Temperature at T2 was 7C. Site visited from 18:00h-19:00h. Sections A, B, C and D were surveyed.
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April 10th   0 0 0     No larvae found. Weather lightly overcast and feeling warm, with a temperature of 11C at T2. Sections A, B, C and D were surveyed. Site visited from 18:40h-19:40h.
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April 11th   1 0 0     One 15mm larvae found this evening. Weather, overcast and feeling cool with a temperature of 5C at T2. Site visited from 18:25h-19:30h. Sections A, B, C and D were surveyed.
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April 12th   6 0 0     A surprising total of six larvae found this evening. Weather, overcast and quite mild, some light rain during the morning and late afternoon leaving the ground damp. Temperature of 8C at T2. Site visited from 18:40h-19:50h. Sections A, B, C and D were surveyed.
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April 13th   0 0 0     No larvae found. Weather dry and partly cloudy. Sections A, B, C and D were surveyed. Site visited from 19:00h-19:55h.
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April 14th   2 0 0     Two larvae found late evening. measuring 18mm and 19mm. Weather, overcast and windy, but dry. Temperature of 13C at T2. Site visited from 20:10h-20:50h. Sections A, B, C and D were surveyed.
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April 15th   10 0 0     Ten larvae found late evening. measuring 16mm to 20mm. Weather partially overcast and windy, but dry. Temperature 14C at T2. Sections A, B, C and D were surveyed. Site visited from 19:10h-20:20h.
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April 16th   6 0 0     Six larvae found late evening. measuring 15mm to 20mm. Weather clear and windy, but dry. Temperature 10C at T2. Sections A, B, C, D and the top of J were surveyed. Site visited from 19:15h-20:30h.
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April 17th   4 0 0     Four larvae found this evening. measuring between 15mm to 18mm. Weather clear, very windy and continuing very dry. Temperature of 16C at T2. Sections A, B, C, D and the top of J were surveyed. Site visited from 18:20h-19:40h.
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April 18th   4 0 0     Four larvae found this evening. measuring between 16mm to 26mm. Weather clear, windy and dry. Temperature of 13C at T2. Sections A, B, C, D and the top of J were surveyed. Site visited from 18:35h-19:50h.
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April 19th   3 0 0     Three larvae found. measuring between 16mm to 18mm. Weather clear and mild, some light rain early moring. Temperature of 10C at T2. Sections A, B, C and D were surveyed. Site visited from 18:50h-20:10h.
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April 20th   3 0 0     Three larvae found. with two measuring 17mm and one at 18mm. Weather clear and very mild, Temperature of 14C at T2. Sections A, B, C and D were surveyed. Site visited from 18:35h-20:00h.
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April 21st   6 0 0     Six larvae found late evening. measuring between 16mm and 25mm. Weather cloudy with a light breeze. Temperature of 10C at T2. Sections A, B, C and D were surveyed. Site visited from 19:10h-20:20h.
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April 22nd   8 0 0     Eight larvae found this evening. measuring between 15mm and 25mm. Weather cloudy with a light breeze. Temperature of 13C at T2. Sections A, B, C and D were surveyed. Site visited from 19:10h-20:25h.
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April 23rd   9 0 0     Nine larvae found this evening. measuring between 15mm and 23mm. Weather clear and mild. Temperature of 13C at T2. Sections A, B, C and D were surveyed. Site visited from 19:10h-20:10h.
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April 24th   3 0 0     Three larvae found. measuring between 15mm and 18mm. Weather cloudy and very mild. Temperature of 14C at T2. Sections A, B, C and D were surveyed. Site visited from 18:30h-19:50h.
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April 25th   6 0 0     Six larvae found this evening. measuring 17mm to 22mm. Weather cloudy with some light rain. Temperature of 13C at T2. Sections A, B, C and D were surveyed. Site visited from 18:40h-19:45h.
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April 26th   2 0 0     Two larvae found this evening. with a 22mm larva in Section D and a 24mm larva in Section S. Weather sunny with light breeze. Temperature of 9C at T2. Sections A, B, C and D were surveyed. Site visited from 18:35h-19:50h.
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April 27th   0 0 0     No larvae found. Weather clear and cool. Temperature of 8C at T2. Sections A, B, C and D were surveyed. Site visited from 19:30h-20:00h.
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April 28th   1 0 0     One 26mm larva found this evening in Section D. Weather cloudy with a light breeze and rain. Temperature of 11C at T2. Sections A, B, C and D were surveyed. Site visited from 18:25h-19:10h.
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April 29th   3 0 0     Three larvae found this evening. Weather sunny with a light breeze and mild. Temperature of 12C at T2. Sections A, B, C and D were surveyed. Site visited from 19:00h-20:00h.
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April 30th   1 0 0     One 25mm larva found this evening in Section B. Weather sunny and mild. Temperature of 10C at T2. Sections A, B, C and D were surveyed. Site visited from 19:15h-20:00h.
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May 1st   3 0 0     Three larvae found this evening. Weather partially cloudy and mild. Temperature of 13C at T2. Sections A, B, C and D were surveyed. Site visited from 19:50h-20:40h.
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May 2nd   0 0 0     No larvae found. Weather sunny and mild. Temperature of 15C at T2. Sections A, B, C and D were surveyed. Site visited from 19:30h-20:00h.
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May 3rd   6 0 0     Six larvae found this evening. Weather cloudy and mild. Temperature of 15C at T2. Sections A, B, C and D were surveyed. Site visited from 18:25h-19:20h.
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May 4th   2 0 0     Two larvae found this evening. Weather sunny and warm. Temperature of 16C at T2. Sections A, B, C and D were surveyed. Site visited from 18:22h-19:10h.
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May 6th   4 0 0     Four larvae found this evening. Weather clear and warm. Temperature of 18C at T2. Sections A, B, C and D were surveyed. Site visited from 20:40h-21:25h.
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May 7th   6 0 0     Six larvae found this evening. Weather sunny and warm. Temperature of 15C at T2. Sections A, B, C and D were surveyed. Site visited from 20:20h-21:00h.
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May 8th   9 0 0     Nine larvae found this evening. Weather cloudy and mild. Temperature of 14C at T2. Sections A, B, C and D were surveyed. Site visited from 20:20h-21:00h.
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May 10th   1 0 0     One larva found this evening in Section D. Weather light breeze and mild. Temperature of 11C at T2. Sections A, B, C and D were surveyed. Site visited from 20:05h-21:00h.
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May 11th   0 0 0     No larvae found. Weather light breeze and cool. Temperature of 8C at T2. Sections A, B, C and D were surveyed. Site visited from 20:25h-21:10h.
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May 12th   3 0 0     Three larvae found this evening. Weather light breeze and mild. Temperature of 12C at T2. Sections A, B, C and D were surveyed. Site visited from 20:30h-21:10h.
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May 13th   2 0 0     Two larvae found this evening. Weather windy with showers most of the day. Temperature of 8C at T2. Sections A, B, C and D were surveyed. Site visited from 19:40h-20:35h.
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May 17th   2 0 0     Two larvae found this evening measuring 20mm and 25mm. Weather overcast and light rain. Temperature of 10C at T2. Sections A, B, C and D were surveyed. Site visited from 19:50h-20:35h.
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May 18th   3 0 0     Three larvae found this evening. Weather overcast and mild. Temperature of 10C at T2. Sections A, B, C and D were surveyed. Site visited from 21:15h-21:45h.
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May 19th   1 0 0     One 18mm larva found this evening in Section D. Weather cloudy and mild. Temperature of 16C at T2. Sections A, B, C and D were surveyed. Site visited from 20:50h-21:15h.
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May 20th   2 0 0     Two larvae found this evening. A later survey for females was conducted, but proved negative. Weather cloudy and very mild. Temperature of 16C at T2. Sections A, B, C and D were surveyed. Site visited from 20:40h-21:15h.
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May 21st   0 0 0     No females or larvae found. Weather light breeze and mild. Temperature of 11C at T2. All sections were surveyed. Site visited from 20:20h-21:00h.
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May 22nd   0 0 0     No females or larvae found. Weather clear and cool. Temperature of 6C at T2. All sections were surveyed. Site visited from 22:20h-00:20h.
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May 23rd   0 0 0     No females or larvae found. Weather cloudy and cool. Temperature of 7C at T2. All sections were surveyed. Site visited from 22:15h-23:20h.
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May 24th   0 0 0     No females or larvae found. Weather cloudy and cool. Temperature of 7C at T2. All sections were surveyed. Site visited from 22:10h-23:15h.
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May 25th   0 0 0     No females or larvae found. Weather clear and mild. Temperature of 11C at T2. All sections were surveyed. Site visited from 22:15h-23:15h.
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May 26th   0 0 0     No females or larvae found. Weather clear and mild. Temperature of 12C at T2. All sections were surveyed. Site visited from 22:00h-23:30h.
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May 27th   0 0 0     No females or larvae found. Weather cloudy and mild. Temperature of 13C at T2. All sections were surveyed. Site visited from 22:05h-23:35h.
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May 28th   0 1 0     No females or larvae found, but a male was found on low vegetation, when seen to produce two faint, brief flashes which were verified and observed by both recorders. Weather cloudy and mild. Temperature of 10C at both T1 and T2. All sections were surveyed. Site visited from 22:10h-23:50h.
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May 29th   0 0 0     No females or larvae found. Weather cloudy and mild with rain most of the day. Temperature of 10C at T2. All sections were surveyed. Site visited from 22:00h-23:00h.
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May 30th   0 0 0     No females found. but one female pupa was located glowing at the top of Section J. Weather cloudy and very mild, with a temperature of 12C recorded at T2. All sections were surveyed. Site visited from 22:10h-23:30h.
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May 31st   0 0 0     No females found. Weather partly cloudy and mild. Temperature of 10C recorded at T2. All sections were surveyed. Site visited from 22:25h-23:45h.
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June 1st   0 0 0     No females found. Weather cloudy and mild. Temperature of 7C recorded at T2. All sections were surveyed. Site visited from 22:15h-23:45h.
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June 2nd   0 0 0     No females found. Weather cloudy and mild. Temperature of 12C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:15h-23:40h.
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June 3rd   0 0 0     No females found. Weather clear and mild. Temperature of 10C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:25h-23:55h.
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June 4th   0 0 0     No females found. Weather cloudy and mild. Temperature of 10C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:30h-00:05h.
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June 5th   0 2 0     No females found, but two males were observed flashing. Weather cloudy and mild, a temperature of 12C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:30h-23:45h.
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June 6th   0 0 0     No females found. Weather clear and fairly mild. Temperature of 9C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:30h-23:40h.
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June 7th   0 1 0     No females found. Weather clear and mild. Temperature of 10C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:30h-23:45h.
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June 8th   0 0 2     Two females found in sections M and C of the survey site. Both were located within long grass. Weather cloudy and mild. Temperature of 12C recorded at T1 and 10C at T2. All sections were surveyed. Site visited from 22:30h-00:15h.
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June 9th   0 0 4     Four females found this evening. Weather cloudy and mild. Temperature of 12C recorded at T1 and 11C at T2.. All sections were surveyed. Site visited from 22:30h-00:05h.
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June 10th   0 0 1     One female found this evening. Weather clear and cool. Temperature of 8C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:30h-23:55h.
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June 11th   0 0 6     Six females found this evening. Weather cloudy and very mild. Temperature of 15C recorded at T1 and 14C at T2. All sections were surveyed. Site visited from 22:30h-00:05h.
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June 12th   0 1 6     Six females found this evening. Weather cloudy and very mild. Temperature of 15C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:25h-23:30h.
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June 13th   0 0 2     Two females found this evening. Weather clear and mild. Temperature of 12C recorded at T1 and 11C at T2. All sections were surveyed. Site visited from 22:30h-00:10h.
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June 14th   0 0 6     Six females found this evening. Weather cloudy and mild with rain most of the evening. Temperature of 11C recorded at T1 and 13C at T2. All sections were surveyed. Site visited from 22:15h-23:55h.
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June 15th   0 0 9     Nine females found this evening. Weather partly cloudy and mild with a little light rain. Temperature of 12C recorded at T1 and T2. All sections were surveyed. Site visited from 23:30h-00:30h.
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June 16th   0 3 14     14 females found this evening. Weather cloudy and mild. Temperature of 12C recorded at T1 and 13C at T2. All sections were surveyed. Site visited from 22:25h-00:10h.
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June 17th   0 0 7     Seven females found this evening. Weather cloudy and mild. Temperature of 12C recorded at T1 and 13C at T2. All sections were surveyed. Site visited from 22:30h-00:15h.
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June 18th   0 0 6     Six females found this evening. Weather cloudy and warm. Temperature of 15C recorded at T1 and 16C at T2. All sections were surveyed. Site visited from 22:30h-00:10h.
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June 19th   0 2 6     Six females found this evening, with single males recorded with two females. Weather partly cloudy and mild. Temperature of 12C recorded at T1 and 14C at T2. All sections were surveyed. Site visited from 22:30h-00:15h.
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June 20th   0 0 9     Nine females found this evening. Weather, heavy rain from late afternoon, continuing into the night, temperatures of 14C recorded at T1 and 13C at T2. All sections were surveyed. Site visited from 22:20h-23:40h.
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June 21st   1 4 10     Ten females found this evening, including two males with females and another two males attracted to an artificial lure. A 10mm larva was recorded glowing twice in section S. Weather, increasing cloud but dry and mild. Temperature of 15C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:40h-00:20h.
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June 22nd   2 0 6     Six females found this evening, with two larvae found glowing in sections K and N. Weather clear and mild with a full moon. Temperature of 13C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:45h-00:45h.
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June 23rd   1 0 18     18 females found this evening, Weather cloudy and mild. Temperature of 12C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:25h-00:30h.
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June 24th   0 0 6     Six females found this evening. Weather clear and cool. Temperature of 6C recorded at T1 and 8C at T2. All sections were surveyed. Site visited from 22:40h-00:20h.
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June 25th   1 1 22     22 females found this evening. Weather cloudy and warm. Temperature of 12C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:50h-00:40h.
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June 26th   0 7 18     17 females found this evening. Weather cloudy and warm. Temperature of 12C recorded at T1 and 14C at T2. All sections were surveyed. Site visited from 22:50h-00:35h.
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June 27th   3 1 15     15 females found this evening. Weather cloudy and mild. Temperature of 12C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:45h-00:40h.
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June 28th   2 1 6     Six females found this evening. Weather partly cloudy becoming clear. Temperature of 12C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:55h-00:45h.
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June 29th   7 4 15     15 females found this evening. Weather cloudy and mild, becoming clear. Temperature of 13C recorded at both T1 and T2. All sections were surveyed. Site visited from 23:00h-01:15h.
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June 30th   2 2 23     23 females found this evening. Weather partly cloudy and very mild. Temperature of 16C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:50h-00:40h.
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July 1st   0 0 8     Eight females found this evening. Weather clear and cool. Temperature of 8C recorded at T1 and 9C at T2. All sections were surveyed. Site visited from 23:00h-00:35h.
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July 2nd   2 0 39     The largest count of the year and a good emergence of new females, meant that 39 females were found this evening. Weather cloudy with a little light rain at times. Temperatures of 14C recorded at T1 and 15C at T2. All sections were surveyed. Site visited from 23:30h-00:35h.
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July 3rd   6 3 29     29 females found this evening. Weather partly cloudy and becoming clear. Temperature of 12C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:55h-01:00h.
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July 4th   0 1 32     32 females found this evening. Weather partly cloudy and becoming clear. Temperature of 13C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:55h-01:10h.
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July 5th   1 2 78     One of the largest emergences of females recorded this evening, with 57 new females out of a total of 78 all being new. Section J provided many, but the emergences occurred across most sections of the site. Weather clear and very warm. Temperature of 14C recorded at T1 and 17C at T2. All sections were surveyed. Site visited from 22:55h-01:15h.
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July 6th   2 1 81     Another 45 new females emerged this evening, although it was discovered that these had all stopped glowing by 01:30h, leaving only existing females glowing and when we still had several sections left to survey. This meant that many were clearly missed during the latter part of the survey. Another very high site total count of 81 was still reached on another very warm night. Temperatures of 14C were recorded at T1 and 16C at T2. Weather clear and dry.
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July 7th   0 5 90     Another 52 new females emerged this evening, among a new site record count of 90 females. Weather overcast and very warm. Temperatures of 17C were recorded at T1 and 19C at T2. Site visited from 22:25h-01:00h.
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July 8th   1 3 46     46 females found this evening. Weather clear and mild. Temperature of 13C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:20h-00:30h.
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July 9th   0 4 81     81 females found this evening. Weather partly cloudy and very mild. Temperature of 18C recorded at T1 and 20C at T2. All sections were surveyed. Site visited from 22:20h-00:30h.
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July 10th   0 1 52     52 females found this evening. Weather cloudy and mild. Temperature of 13C recorded at T1 and 14C at T2. All sections were surveyed. Site visited from 22:30h-00:30h.
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July 11th   0 1 36     35 females found this evening. Weather clear and mild. Temperature of 12C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:20h-00:15h.
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July 12th   1 2 57     57 females found this evening. Weather clear and very warm. Temperature of 20C recorded at T1 and 21C at T2. All sections were surveyed. Site visited from 22:10h-00:20h.
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July 13th   6 1 30     30 females found this evening. Weather clear and very warm. Temperature of 17C recorded at T1 and 18C at T2. All sections were surveyed. Site visited from 22:15h-00:40h.
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July 14th   1 0 18     18 females found this evening. Weather clear and warm. Temperature of 14C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:25h-00:05h.
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July 15th   2 1 20     20 females found this evening. Weather clear and very warm. Temperature of 18C recorded at T1 and 19C at T2. All sections were surveyed. Site visited from 22:20h-00:00h.
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July 16th   0 0 21     21 females found this evening. Weather clear and very warm. Temperature of 20C recorded at T1 and 21C at T2. All sections were surveyed. Site visited from 22:15h-23:50h.
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July 17th   1 0 16     16 females found this evening. Weather clear and very warm. Temperature of 18C recorded at T1 and 19C at T2. All sections were surveyed. Site visited from 22:25h-00:05h.
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July 18th   1 1 12     12 females found this evening. Weather clear and very warm. Temperature of 18C recorded at T1 and 19C at T2. All sections were surveyed. Site visited from 22:20h-00:10h.
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July 19th   0 0 11     11 females found this evening. Weather partly cloudy and very mild. Temperature of 18C recorded at T1 and 19C at T2. All sections were surveyed. Site visited from 22:20h-23:50h.
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July 20th   0 0 10     10 females found this evening. Weather cloudy and very mild. Temperature of 18C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:20h-00:15h.
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July 21st   0 1 9     Nine females found this evening. Weather cloudy and mild. Temperature of 16C recorded at both T1 and T2. All sections were surveyed. Site visited from 21:55h-23:25h.
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July 22nd   0 0 6     Six females found this evening. Weather, a short-lived thunderstorm, then dry and very warm and humid. A temperature of 20C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:05h-23:05h.
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July 23rd   0 0 5     Five females found this evening. Weather clear warm and misty. Temperature of 18C recorded at T1 and 19C at T2. All sections were surveyed. Site visited from 22:10h-23:25h.
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July 24th   0 0 6     Six females found this evening. Weather cloudy and very mild. Temperature of 19C recorded at T1 and 20C at T2. All sections were surveyed. Site visited from 22:25h-23:20h.
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July 25th   0 0 4     Four females found this evening. Weather cloudy and very mild. Temperature of 18C recorded at T1 and 20C at T2. All sections were surveyed. Site visited from 22:10h-23:25h.
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July 26th   2 0 3     Three females found this evening. Weather clear and mild. Temperature of 16C recorded at T1 and 18C at T2. All sections were surveyed. Site visited from 22:20h-23:35h.
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July 27th   0 0 1     One females found this evening. Weather heavy rain after a sunny and warm day. Temperature of 17C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:00h-23:00h.
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July 28th   1 0 0     No females found this evening. Weather dry during this evening's survey, but a heavy shower late afternoon. Temperature of 17C recorded at T1 and 18C at T2. All sections were surveyed. Site visited from 22:15h-23:10h.
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July 29th   0 0 0     No females found this evening. Weather clear and mild. Temperature of 16C recorded at both T1 and T2. All sections were surveyed. Site visited from 22:10h-23:00h.
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July 30th   3 0 0     No females found agian this evening, but three Larvae found. Weather clear and mild. Temperature of 17C recorded at T1 and 18C at T2. All sections were surveyed. Site visited from 22:15h-23:10h.
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August 13th   6 0 0     Six larvae found during a short survey this evening. Weather dry and clear. Only sections K and J were surveyed this evening. Site visited from 22:30h-23:15h. Temperatures of 13C at T1 and 14C at T2.
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August 25th   13 0 0     A total of 13 larvae found this evening. Weather clear and mild, with recorded temperatures of 12C at T1 and 13C at T2. Sections D, F, J, K, L, M and S were surveyed.
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August 26th   28 0 0     A site record of 28 larvae were located in a survey of sections D, E, F, I, J, K, L, M, N and S. Weather clear and mild, with the generl ground conditions continuing to be very dry. Many larvae appeared very thin, with no signs of having fed recently. Recorded temperatures of 13C at both T1 and T2. Site visited from 22:10h-00:00h.
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August 28th   16 0 0     Another good total of 16 larvae this evening. Sections D, E, F, I, J, K, L, M, N and S were surveyed. Weather dry, clear and mild, with recorded temperatures of 11C at T1 and 12C at T2. Site visited from 21:25h-23:25h.
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August 30th   12 0 0     12 larvae found this evening in a survey of sections D, E, F, G, I, J, K, L, M, N and S. Weather overcast, warm and continuing very dry. Recorded temperatures of 15C at T1 and T2. Site visited from 22:00h-23:55h.
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September 1st   8 0 0     A slightly earlier survey provided a total of eight larvae found in sections D, E, F, I, J, K, L, M and N. It is thought that larval bioluminescence may be lower during the first hours of darkness. Recorded temperatures of 13C at T1 and 14C at T2. Weather dry, overcast and warm, site visited from 21:10h-22:45h.
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September 2nd   20 0 0     Another excellent site count of 20 larvae this evening. Sections D, E, F, G, I, J, K, L, M, N and S were surveyed. Site visited from 22:15h-00:20h, weather dry and warm. Recorded temperatures of 15C at both T1 and T2.
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September 4th   21 0 0     Another 21 larvae found this evening. Sections D, E, F, G, I, J, K, L, M, N and S were surveyed. Weather overcast and warm, continuing to be very dry, with temperatures of 18C at both T1 and T2. Site visited from 20:50-00:05h. Larval bioluminescence increased as the survey continued.
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September 5th   7 0 0     Just seven larvae found during a short survey late evening. Sections D, F, G, I, J, K, L and M were surveyed between 23:00h-00:00h. Recorded temperatures of 12C at T1 and 13C at T2. Weather clear and mild.
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September 6th   48 0 0     A new site record count of 48 larvae, came after the first days rain for several weeks. There were signs that some larvae had finally either taken on water or had fed. Sections D, E, F, G, I, J, K, L, M, N and S were surveyed, with 29 larvae being recorded along section I alone. A good number of larvae were also located well off the ground, on plant stems etc. Cooler this evening, with recorded temperatures of 10C at T1 and 11C at T2. Weather, clear skies and misty, following rain most of the day until mid-afternoon. Site visited from 22:15h-01:35h.
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September 7th   10 0 0     A total of 10 larvae found, including the first of the year in section F. Sections D, F, G, J, K, L and M were surveyed. Weather dry and cool, with recorded temperatures of 8C at T1 and 10C at T2. Site visited from 20:50h-23:20h.
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September 8th   7 0 0     Seven larvae were found this evening, with surveying largely concentrated to section O, which we rarely survey. Sections L, M and O were all surveyed several times. Weather, dry with clearing skies and becoming cool, with temperatures of 7C at T1 and 10C at T2. Site visited from 21:50h-23:20h.
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September 9th   9 0 0     Nine larvae found this evening. Sections F, J, K and O were all surveyed. Weather, dry and clear, with a temperature of 10C at both T1 and T2. Site visited from 23:55h-01:35h.
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September 10th   15 0 0     15 larvae found this evening. Only sections K, L and O were all surveyed. Weather, dry, clear and mild, with a temperature of 12C at both T1 and T2. Site visited from 22:15h-23:40h.
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September 18th   2 0 0     Just two larvae found in section I early evening. Sections F, G, I, J, K, L, M, N and O were surveyed. Weather, clear spells with a near full moon and fairly mild, with a temperature of 11C recorded at both T1 and T2. Site visited from 20:15h-22:00h.
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September 23rd   29 0 0     The warm temperatures saw a total of 29 larvae found this evening. Many larvae were actively hunting and producing the characteristic short glows. Sections E, F, G, I, J, K, L, M, N, O and S were surveyed. Weather overcast and warm, with a temperature of 16C recorded at both T1 and T2. Site visited from 20:35h-23:10h.
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October 2nd   26 0 0     Another very mild evening, saw good larval activity in most sections surveyed. A total of 26 larvae were recorded. Sections F, G, I, J, K, L, M and N were surveyed. Weather overcast and very mild after rain most of the day, with a temperature of 14C recorded at both T1 and T2. Site visited from 22:00h-23:40h.
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October 4th   15 0 0     A total of 15 larvae found this evening, with only sections D, E, J, K, L, M, O and S surveyed. Weather clear and mild with recorded temperatures of 13C at T1 and 14C at T2. Site visited from 23:45h-01:45h.
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October 5th   11 0 0     11 larvae found thid evening, with just sections E, J, K, L, M and S surveyed. Weather clear and fairly mild, though cooler than last night with temperatures of 8C at T1 and 10C at T2. Site visited from 21:30h-23:30h.
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October 6th   11 0 0     Some different sections surveyed this evening, including F, G, I, J, K, L, M, N and S. Weather clear and fairly mild again, with temperatures of 11C at T1 and 12C at T2. Site visited from 23:45h-01:00h.
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October 23rd   3 0 0     Three larvae were found during a short survey this evening. Only sections F, J, K, L, M, N and O were surveyed. Site visited from 19:00h-20:20h, weather clear and fairly mild, with a temperature of 10 C at T1 and 11C at T2.
     
     
Below:- Arial map showing the positions of female Glow Worms at Clipstone Old Quarter during 2013.
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Below:- Arial map showing the survey route we take each night. Sections A, B, C and D are the only areas where larval counts are made. The two yellow dots show the two locations (highest and lowest points on site) where the temperature is taken during the season.
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