The wings are short, making the tail seem long by comparison. Female: duller yellow head and back, black and yellow wing bars and streaky breast and belly. They use carotenoids acquired from their diet to make these bright colors, and the colors are a sexual trait used to attract female mates. It may only be possible to tell a male zebra finch from a female zebra finch by the deeper color of the beak on the male in such varieties. The European goldfinch or Carduelis carduelis is a very popular bird among ornithologists, as it emits a beautiful and unique song and delights with its colorful plumage. Typically the male engages in his courtship ritual in order to attract a female of the same species, although it is not entirely unusual to see a male in captivity court a hen of a different species, or even to see him court another male. Identifying the male and female house from other Carpodacus finches requires care. Male House Finches come in several colors, from the most familiar red shading through orange to bright golden yellow. Sexually Dimorphic Species Some finches are sexually dimorphic, meaning that the males can be distinguished from the females visually.Typically, with these species, the male is the more vibrantly colored or more elaborately marked of the two sexes. Bill is pink and conical. Female is duller with olive back and lacks black cap and yellow shoulder bars. Female House Finches are brown and heavily streaked overall, while males typically sport a red rump, breast, and headband. Male top and female below The Purple Finch, Carpodacus purpureus, is a small finch. Adults have a short forked brown tail and brown wings. If you're wondering how to differentiate between a male and a female goldfinch, keep reading this AnimalWised article to find out. In order to attract a mate, a finch engages in courtship behaviors. Juvenile: streaky head, back, belly and breast with pale yellow wing bars. Wings have flashy white patches and bright yellow shoulder bar. There is … Distinguishing male and … 7 Examples of dimorphic species are the Lady Gouldian Finch and the Cordon Bleu Waxbill, both pictured above. Other Finch Photo Galleries: Firetail Finches: These small Australian finches are named for their distinctive bright-red rumps. Many finches have distinctly notched tails, but the House Finch has a relatively shallow notch in its tail. this mutation has NO yellow , its bred from green back gouldians. Sexually Dimorphic Species Some finches are sexually dimorphic, meaning that the males can be distinguished from the females visually.Typically, with these species, the male is the more vibrantly colored or more elaborately marked of the two sexes.