Thursday, 21 July 2016

Reed Warblers

Had a fantastic afternoon photographing several adult Reed Warblers at Stocker's Lake Nature Reserve.
Other sightings of note; 1 Lsr sp woodpecker, 3 Hobby, 1 Goldeneye (male eclipse), 2 Little Ringed Plover, lots of Sedge & Reed Warblers, 3 Garden Warbler, 3 Kingfisher and 20+ Common Tern.

BTO biometric for comparison of Acro Warblers in UK. A selection of my photos below show significatn variation in primary projection of 4 different Reed warblers photographed yesterday at Stocker's Lake.

Biometrics Reed Warbler Marsh Warbler Blyth's Reed Warbler
Wing length 62-73mm 64-76mm 58-66mm
Tail length 48-55mm 47-55mm 46-54mm
Bill length 15.0-18.5mm 14.3-17.2mm 15.3-18.5mm
Bill width 3.7-4.2mm 3.8-4.6mm 3.8-4.6mm
Tarsus length 21.5-24.5mm 21.0-24.0mm 20.5-23.0mm
Wing point P3 P3 (P2) P3
Emarginations P3 P3 P4
Notch to P2 P7-SS P6-P9 1.0-8.5mm
Length of Notch on P2 9.0-15.0mm 7.5-11.0mm 10.5-14.0mm
Primary Projection 15-19mm 17.5-22mm 11.5-16mm
Notch on P3 Slight notch   P8-SS (ad), P6-P10(1Y)


This bird shows relatively short projection. Reed warbler PP is 15-19mm

This bird showed exceptionally long projection from Tertial tip. Leg colour quite bright pinkish/yellow in bright sunshine light looking ideal for Marsh Warbler. Ideal PP range 17-22mm

Closed wing view the notch on 2nd primary falls almost level with secondaries. Primary projection is medium length here.
Standard looking PP for Reed Warbler showing medium length.

Adult Reed Warblre showing extensive wear on tail, primaries and tertials

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