Portland Bird Observatory
and Field Centre
Blyth's Reed Warbler Acrocephalus dumetorum
Portland Bill, May 11th 2004
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photos © Tim Parmenter (top) and Martin Cade (others)
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Portland Bird Observatory
and Field Centre
Blyth's Reed Warbler Acrocephalus dumetorum
Portland Bill, May 11th 2004
Selected Biometry (measurements in mm; primaries numbered ascendently) Bill length (to feathering) 11.5 Wing length (maximum chord) 61.5 Tail length 52 Emarginations P3, P4 and P5 Wing-point P3 and P4 1st primary < 2nd primary 32 2nd primary < wing-tip 4 5th primary < wing-tip 1 6th primary < wing-tip 3.5 7th primary < wing-tip 4.5 longest secondary < wing-tip 15 longest tertail < wing-tip 14 photos © Tim Parmenter (top) and Martin Cade (others)