Carpodacus mexicanus
Most of the male House Finches show a definite red color on their head and neck, but we have a few that have a much more orange cast, such as this one. Perhaps he is an immature male, or is just genetically inclined to the more orange color. We have been seeing definite immature males, which look like females except their feathers are a light pink where they will eventually turn the brighter red.