I'll check this ...
Okay, "American Goldfinches are the only finch that molts its body feathers twice a year, once in late winter and again in late summer. The brightening yellow of male goldfinches each spring is one welcome mark of approaching warm months."
Cornell
"After the autumn molt, the bright summer feathers are replaced by duller plumage, becoming buff below and olive-brown above, with a pale yellow face and bib. The autumn plumage is almost identical in both sexes, but the male has yellow shoulder patches.[20] In some winter ranges, the goldfinches lose all traces of yellow..."
Wikipedia
As best as I can figure it, the Goldfinch hangs around with Pine Siskins. About the only way I distinguish Pine Siskins is that they will get in a little, dense pine tree, no taller than a person. If you are quiet, you can walk right around that little tree with the male singing all the while. ... other than that, he's just a little brown bird.
To add to the bird confusion, we have Brewer's Sparrows here. This is
Cornell again: "Brewer’s Sparrows are at first glance so subtly marked that they’ve been called the 'bird without a field mark.'"
Lady Bird Johnson, or someone, named all these birds "little brown jobs." LBJs
Steve