Maps showing the distribution of the House Finch through time.
Despite its origin, the House Finch is a handsome bird. The males color can range from yellow to orange to red, with the darker red males being in demand with the females. Supposedly, the more brilliant the red, the better the male is at obtaining good food, rich in carotenoids, a chemical found in many plants that have red and orange color. The females will want to choose a male that can provide ample food for her and the brood. The female is white and brown streaked, so she is better camouflaged when sitting on the nest.
House finch female