Thursday, March 24, 2011

Until yesterday evening there had been 21 records of Hawfinch on Bardsey, four of which had been trapped and ringed. The 22nd was quietly sat next to the generator building and was picked up just as the generator was about to go on for the evening. It quickly found an adjacent mist net.

After the post-juvenile moult there appear to be no differences in plumage between adults and first-year birds.  But we can tell this bird is a male because of the glossy black, purple glossed, outer webs to the secondaries. (c) Richard Brown

This female, caught on Bardsey in 2008, shows a clear ash grey panel across the secondaries. (c) Richard Brown

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