Just 15 pairs
bred in 1998, but this crashed to just four pairs in
1999. The following year saw a slight rise to six pairs.
By 2001 Chiffchaff was back up to 11 pairs and totals
remained similar to 2007. From 1998-2007, the year's
first three male Chiffchaff to hold territory for any
length of time (not including brief hedgerow migrants)
all returned to the same two sites. These were one at
High Trees and two at Hare Hill Wood. Whether these were
the same birds remains uncertain, but it is likely that
they were for several years at least. |