Male house finches are usually marked with red, but sometimes those red areas are replaced with orange or yellow or some of both. The red pigment in the feathers is affected by what the finch eats ...

DEAR JOAN: A male house finch that is a regular visitor to my deck for sunflower ... Lastly, the reddish mating color on his head feathers appears fainter and lesser than the other male finches. Is it ...