American goldfinch |
The so-called American goldfinch, Carduelis tristis, is a related finch, also known as the yellow bird or thistle bird. In summer the male is bright yellow with black wings, tail, and crown while the female is dull olive-brown, both sexes assuming the latter plumage in winter, for the species is not migratory. They flit about the fields and roadsides in small bands, flying with a characteristic undulating motion and uttering a sweet warble. The nest of the goldfinch is a cup of soft materials placed in a low tree. It is one of the most familiar and delightful of American birds.