Breeds in primarily open coniferous, but also mixed-coniferous forests. May also breed in parks and cemeteries, and forages in trees, shrubs, and grassy areas (Dawson 1997).
Dawson, W. R. 1997. Pine Siskin (Carduelis pinus). In The Birds of North America. Vol. 7, No. 280 (A. Poole and F. Gill, Eds.). Philadelphia: The Academy of Natural Sciences; Washington, D.C.: The American Ornithologists’ Union.