A rare instance of brood-parasitism by a house finch has been recorded. These include the horned lark, orange-crowned warbler, and house finch. Say's phoebe, house finch and house sparrow. Some host species, such as the house finch, feed their young a vegetarian diet. Scarlet tanager, rose-breasted grosbeak, American goldfinch, house finch, and song sparrow are also common nesters. The purple finch population has declined sharply in the East due to the house finch. The house finch ("Haemorhous mexicanus") is a bird in the finch family Fringillidae.