Portland Bird Observatory
and Field Centre
'eastern' Lesser Whitethroat Sylvia curruca ?halimodendri
Southwell, November 19th 2003
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photos © James Lees and Martin Cade
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Portland Bird Observatory
and Field Centre
'eastern' Lesser Whitethroat Sylvia curruca ?halimodendri
Southwell, November 19th 2003
Biometry (measurements in mm; primaries numbered ascendently) Bill length (to feathering) 8.5 Bill depth (at proximal end of nostrils) 2.9 Bill width (at proximal end of nostrils) 3.9 Wing length (maximum chord) 65 Tail length 57 Tail/wing ratio (x100) 87.6 Wing-point P3/P4/P5 1st primary < 2nd primary 30 2nd primary < wing-tip (and position) 4.5 (P6/P7) 6th primary < wing-tip 3.5 7th primary < wing-tip 6 10th primary < wing-tip 12 Tarsus length 22.0
photos © James Lees and Martin Cade