eWestern Birds

The Quarterly Journal of Western Field Ornithologists

Vol. 48, No. 1
March 2017
Western Field Ornithologists

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Review of the Avifauna of the Tres Marías Islands, Mexico, Including New and Noteworthy Records
Héctor Gómez de Silva, Mónica G. Pérez Villafaña, Javier Cruz Nieto, Juan Cruzado Cortés, Robert A. Hamilton, Santiago Vásquez Vásquez, and Miguel Angel Cruz Nieto

Ranges of the Subspecies of the White-breasted Nuthatch in California
Edward R. Pandolfino, Kenneth P. Able, Jon L. Dunn, Kimball L. Garrett, and Dawn Lasprugato

Contrasting Habitat Associations of Sagebrush-Steppe Songbirds in the Intermountain West
Robert A. Miller, Laura Bond, Patrick N. Migas, Jay D. Carlisle, and Gregory S. Kaltenecker


Pied-billed Grebe Predation on a Common Yellowthroat
Susanne Scholz and Floyd E. Hayes

Black-chinned Hummingbird Captured in Web of the Spider Nephila clavipes in Mexico
José Gilberto Torres-Jiménez, R. Carlos Almazán-Núñez, and Antonio Estrada-Ramírez

Extreme Hummingbirds: Three Species North of the 55th Parallel
Doreen Cubie and Fred Bassett

Book Review
Chris D. Benesh

Thank You to Our Supporters

Featured Photo: Carotenism in the Purple Finch
Jeff N. Davis

Front cover photo by Héctor Gómez de Silva of Mexico City, Mexico: Grayson’s Streak-backed Oriole (Icterus pustulatus graysoni), Tres Marías Islands, Nayarit, Mexico. The Tres Marías Islands are home to about 24 endemic taxa of birds, some very distinctive, such as Icterus pustulatus graysoni, in which the streaks on the back are nearly lacking. But the islands’ avifauna as a whole is still incompletely known. In this issue, Héctor Gómez de Silva, Mónica G. Pérez V., Javier Cruz N., Juan Cruzado C., Robert A. Hamilton, Santiago Vásquez V., and Miguel Angel Cruz N. advance our knowledge of it greatly.

Back cover “Featured Photo” by Sam Lei of Davis, California: carotenistic Purple Finch (Haemorhous purpureus), Davis, Yolo County, California, 18 January 2016.