eWestern Birds

The Quarterly Journal of Western Field Ornithologists

Vol. 51, No. 2
May 2020
Western Field Ornithologists

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Contents
MAIN ARTICLES

Further Information on the Avifauna of St. Matthew and Hall Islands, Bering Sea, Alaska
Bryce W. Robinson, Jack J. Withrow, Rachel M. Richardson, Steven M. Matsuoka, Robert E. Gill, Jr., Andrew S. Johnson, Irby J. Lovette, James A. Johnson, Anthony R. DeGange, and Marc D. Romano Winter

Populations of Waxwings in Idaho
Daniel M. Taylor

Hirundo rustica rustica at Herschel Island–Qikiqtaruk, Yukon— A Barn Swallow Subspecies New to Canada
Cameron D. Eckert and Richard R. Gordon

Temporal Response of California Black Rails to Tidal Wetland Restoration
Jules Evens

Vocal Differences among the Barred, Cinereous, and Fulvous Owls
Nathan Pieplow and Andrew Spencer

Molt, Age, and Identification of the Masked and Nazca Boobies in California
Peter Pyle

Two Photographed American Coot × Common Gallinule Hybrids
Richard A. Erickson and Stephen C. Rottenborn

Course Review: Learning California Bird Sounds
W. David Shuford

NOTES

First Record of the Purple Martin Breeding in Idaho
Austin R. Young and Liam M. Waters

Post-Breeding Extra-Pair Pseudocopulation in the Pygmy Nuthatch
Lisa D. Walker-Roseman, Kevin A. Giusti, and Floyd E. Hayes

Featured Photo: A Possible First Hybrid of Icteria × Icterus
Matthew Grube

Front cover painting by © Bryce Robinson of Boise, Idaho: Leucosticte tephrocotis umbrina, the subspecies of the Gray-crowned Rosy-Finch endemic to the islands of the Bering Sea: St Matthew, Hall, and the Pribilofs.

Back cover “Featured Photo” by © Matthew Grube of Redlands, California: Apparent hybrid of a Yellow-breasted Chat (Icteria virens) × oriole, probably Hooded Oriole (Icterus cucullatus), San Timoteo Canyon, San Bernardino County, California, 10 September 2019.