Thursday, March 3, 2011

Finch

The "classical" true finches range in size from the Andean Siskin (Carduelis spinescens) at 9.5 cm (3.8 in) and 8.4 g (0.3 oz) to the Collared Grosbeak (Mycerobas affinis) with its nearly 23 cm (9 in) and 80 g (3 oz). They typically have strong, stubby beaks, which in some species can be quite large; however, Hawaiian honeycreepers are famous for the wide range of bill shapes and sizes brought about by adaptive radiation. All true finches have 12 remiges and 9 primary rectrices. The basic plumage colour is brownish, sometimes greenish; many have considerable amounts of black, while white plumage is generally absent except as wing-bars or other signalling marks.











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