Two different 'Mealy type' Common Redpolls, Gamlingay, 5th March 2011 © Mark Thomas.
Mark is currently ringing a mixed flock of more than 100 Redpolls visiting his Gamlingay garden. This migrant flock predominantly contains Lesser Redpolls Carduellis cabaret which occur in Britain, Central Europe and South West Scandinavia. Some 'Mealy' Redpolls like the ones above are also present - these typically greyer-toned birds emanate from Fenno-Scandinavia.
You can see more of Mark's Redpolls and follow his blog here.
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