Micrathene

Coues, Elliot. 1866. Proceedings of the Academy of Natural Sciences of Philadelphia (Proc. Acad. Nat. Sci. Philadelphia) 18: p 51.

pdf

Micrathene whitneyi

Elf Owl

Cooper, James Graham. 1861. Proceedings of the California Academy of Sciences ( Proc. Cal. Acad. Sci.; Series 1) 2: p 118.

pdf

M. w. idonea

(Ridgway) 1914. Bulletin of the U.S. National Museum, no. 50, pt.6, p. xvii, 807, 810.

pdf

M. w. graysoni

(Ridgway) 1886. The Auk, 3, p. 333.

pdf

M. w. sanfordi

(Ridgway) 1914. Bulletin of the U.S. National Museum, no. 50, pt. 6, p. xvii, 807, 809.

pdf