Friday 26th January 2018

JPA984 tristis

The first of three Siberian Chiffchaffs trapped on 26th January 2018

At last, a dry day with winds, which were low enough to get some nets up. In fact, at times in mid-morning it felt positively balmy. The sunny periods were enough to produce swarms of midges, whirling about in mating dances on the leeward sides of taller trees and a north-westerly breeze drifted them towards the net ride beside the sewage treatment plant. Things were looking good for decent numbers of Chiffchaffs. These midges are a major component of their winter diet, often turning their droppings black, when the midges are swarming. When the sun goes in the midges disappear and the warblers disperse making them harder to trap.

JPA971 tristis

The second Siberian Chiffchaff

 

In the event, the morning’s tally of 47 birds included 30 Chiffchaffs, 4 Firecrests and 2 Goldcrests. Three of the Chiffchaffs showed all of the characteristics of tristis and two of them obligingly gave the characteristic short “peep” call when released.JPA 978 tristis

 

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