Tuesday, December 20, 2011
Monday, December 19, 2011
Sunday, December 18, 2011
Friday, December 16, 2011
Wednesday, December 14, 2011
Hen Harrier
Female Hen Harrier, Fowlmere RSPB, 14th December 2011 © Brian Herdman
'Identification of ring-tail harriers can be a challenge, but this photo clearly shows five distinct primaries in the wing tip, identifying the bird as a hen harrier (four primaries are visible on Montagu's and pallid). Furthermore, this bird can be aged as an adult (i.e. at least one year old or more) because two ages of secondaries can be seen; a bird born this year should not have moulted any flight feathers, which would therefore all look the same age. See Forsman, D. (1999) The Raptors of Europe and the Middle East. Poyser, London.' Doug Radford who submitted the photo on Brian's behalf.
'Identification of ring-tail harriers can be a challenge, but this photo clearly shows five distinct primaries in the wing tip, identifying the bird as a hen harrier (four primaries are visible on Montagu's and pallid). Furthermore, this bird can be aged as an adult (i.e. at least one year old or more) because two ages of secondaries can be seen; a bird born this year should not have moulted any flight feathers, which would therefore all look the same age. See Forsman, D. (1999) The Raptors of Europe and the Middle East. Poyser, London.' Doug Radford who submitted the photo on Brian's behalf.
Tuesday, December 13, 2011
Aythya Hybrid
Possible Pochard/Tufted Duck Hybrid, Barleycroft, November 2011 © Richard Thomas
'While we're on plastic hybrids, here's a presumed Pochard x Tuftie drake I photographed at Barleycroft in November.' RT - Posted at current date for comparative purposes - GP
Aythya Hybrid
Possible Ring-necked/Tufted Duck Hybrid, Fen Drayton Lakes RSPB, 13th December 2011 © Richard Thomas
'An interesting drake Aythya hybrid this am in the southwest corner of Ferry
Lagoon. Although not as clear-cut as some Ring-necked x Tuftie examples on the web (bill
pattern not very striking, hardly any white along flanks edges), my money would
be on it being this hybrid combination given its head shape and grey flanks.' RT
'An interesting drake Aythya hybrid this am in the southwest corner of Ferry
Lagoon. Although not as clear-cut as some Ring-necked x Tuftie examples on the web (bill
pattern not very striking, hardly any white along flanks edges), my money would
be on it being this hybrid combination given its head shape and grey flanks.' RT
Friday, December 09, 2011
Thursday, December 01, 2011
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