Only four passerine species regularly breed on St. Paul. Lapland Longspur, Snow Bunting and Gray-crowned Rosy-Finch are abundant; Winter Wren is in small numbers. Many other species occur as migrants or vagrants, or occasional breeders.
Gray-crowned Rosy-Finches are abundant. They nest in rock crevices, and like some other crevice nesters have adapted to nesting in buildings. The Pribilofs have a distinctive subspecies (umbrina) that is much larger than those found on the mainland; these birds are about the size of a Brown-headed Cowbird.
Snow Bunting
Winter Wren: Its habitat (a rock quarry) and the bird. This is another species in which the Pribilof form is a distinctive subspecies (alascensis). It has a peculiarly pale coloration and is a bit larger.
Brambling. A terrible picture, but identifiable.
Eyebrowed Thrush. It is a close relative of the American Robin, sort of a more pastel version of it. Another species that isn't in Sibley.
