Wood Warbler
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Phylloscopus sibilatrix
Scarce & local Summer visitors from April-September with 17,000 breeding pairs in Britain.
Also breeds in mainland Europe & North West Asia.
Rare elsewhere.
Winters in tropical Africa.
They can e distinguished from similar species, like the Chiffchaff P. collybita and the Willow Warbler, P. trochilus by its yellow supercilium, throat and upper breast, pale tertial edges, longer primary projection, and by its shorter but broader tail.
The song is a high-pitched fluid metallic trill of increasing tempo pit-pit-pitpitpitpt-t-t-ttt descending into piping notes of lower pitch piüü-piüü-piüü.
The contact call is a soft piping note, similar to the second song type, but shorter and given singly, piü.