Unstreaked. The male is unlike any other finch in North America; the Wilson’s warbler is the only other bright yellow species with a black cap, but it does not have the finchlike bill or the ...
3monon MSN
More information: Daniel M. Hooper et al, Spread of yellow-bill-color alleles favored by selection in the long-tailed finch ...
Results that may be inaccessible to you are currently showing.
Hide inaccessible results