1. AMEC Earth and Environmental, Conservation Biology Institute (CBI), Onaka Planning and Economics, and the Rick Alexander Company, 2003, Final MHCP plan, v. 1: Prepared for the Multiple Habitat Conservation Program.
2. Arnold, T.W., 2010, Uninformative parameters and model selection using Akaike’s Information Criterion: The Journal of Wildlife Management, v. 74, no. 6, p. 1175–1178. [Available at https://doi.org/10.1111/j.1937-2817.2010.tb01236.x.]
3. Atwood, J.L., and Bolsinger, J.S., 1992, Elevational distribution of California Gnatcatchers in the United States: Journal of Field Ornithology, v. 63, no. 2, p. 159–168.
4. Atwood, J.L., Bontrager, D.R., and Gorospe, A.L., 1998, Use of refugia by California Gnatcatchers displaced by habitat loss: Western Birds, v. 29, p. 406–412.
5. Atwood, J.L., and Bontrager, D.R., 2020, California Gnatcatcher (Polioptila californica), version 1.0 in Poole, A.F., and Gill, F.B., eds., Birds of the world: Ithaca, N.Y., Cornell Lab of Ornithology, accessed August 14, 2023, at https://doi.org/10.2173/bow.calgna.01.