1st winter – 9th March 1996
Recorded as 1st winter male. Wintersett Reservoir, West Yorkshire
Wing length: 73mm
Width of dark streak on longest undertail covert: 1.8mm
Length of unstreaked white rump: 12mm
Credit for trapping and photographing goes to Pete Smith, the late Philip Harrison and John Gardner
This has pretty streaky looking flanks to me. If the rump were hidden I think I could easily overlook it.