Eakring Birds
Species migration 1998-2010
 
Swift
An early return migrant, with highest numbers recorded around mid-July. No large movements have occurred after August 1st and much larger movements can often occur ahead of thunderstorms or deep areas of low pressure systems in June. Largest movement was 1 270 north-west on July 30th 2005.
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Combined monthly migration totals per year
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Annual/monthly migration totals (numerical)
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Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec   Total
                             
1998         61 96 361 45 3         566
1999         90   758 111 2         961
2000       2 103 1 067 349 4           1 525
2001       8 167   42 34 2         253
2002         1 59 502 34 1         597
2003       7 65 15 953 22           1 057
2004       101 23 53 265 11           453
2005       14 185   2 201 18           2 418
2006       8 28   165 3           204
2007       9 18   76 2           105
2008       2 19 148 69 5 3         246
2009         69   101 286           456
2010       10 13   218 162           403
   
Annual/monthly migration totals
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Species migration index
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