Volume 40, Number 3, 2009 
The 33 rd Report of the California Bird Records Committee: 2007 
Records Daniel S. Singer and Scott B. Terrill 158 
Distribution, Abundance, and Survival of Nesting American Dippers 
Near Juneau, Alaska Mary F. Willson, Grey W. Pendleton, 
and Katherine M. Hocker 191 
Changes in the Winter Distribution of the Rough-legged Hawk 
in North America Edward R. Pandolfino and 
Kimberly Suedkamp Wells 210 
Nesting Success of California Least Terns at the Guerrero Negro Saltworks, 
Baja California Sur, Mexico, 2005 Antonio Gutierrez-Aguilar, 
Roberto Carmona, and Andrea Cuellar 225 
NOTES 
Sandwich Terns on Isla Rasa, Gulf of California, Mexico 
Enriqueta Velarde and Marisol Tordesillas 230 
Curve-billed Thrasher Reproductive Success after a Wet Winter 
in the Sonoran Desert of Arizona Carroll D. Littlefield 234 
First North American Records of the Rufous-tailed Robin 
(Luscinia sibilans) Lucas H. DeCicco, Steven C. Heinl, 
and David W. Sonneborn 237 
Book Reviews Rich Hoyer and Alan Contreras 242 
Featured Photo: Juvenal Plumage of the Aztec Thrush 
Kurt A. Radamaker 247 
Front cover photo by © Bob Lewis of Berkeley, California: 
Dusky Warbler ( Phylloscopus fuscatus), Richmond, Contra 
Costa County, California, 9 October 2008, discovered by Emilie 
Strauss. Known in North America including Alaska from over 
30 records, the Dusky is the Old World Warbler most frequent 
in western North America south of Alaska, with 1 3 records from 
California and 2 from Baja California. 
Back cover “Featured Photos” by © Kurt A. Radamaker of 
Fountain Hills, Arizona: Aztec Thrush ( Ridgwayia pinicola), re- 
cently fledged juvenile. Mesa del Campanero, about 20 km west 
of Yecora, Sonora, Mexico, 1 September 2007. 
Western Birds solicits papers that are both useful to and understandable by amateur 
field ornithologists and also contribute significantly to scientific literature. The journal 
welcomes contributions from both professionals and amateurs. Appropriate topics 
include distribution, migration, status, identification, geographic variation, conserva- 
tion, behavior, ecology, population dynamics, habitat requirements, the effects of 
pollution, and techniques for censusing, sound recording, and photographing birds in 
the field. Papers of general interest will be considered regardless of their geographic 
origin, but particularly desired are reports of studies done in or bearing on the Rocky 
Mountain and Pacific states and provinces, including Alaska and Hawaii, western 
Texas, northwestern Mexico, and the northeastern Pacific Ocean. 
Send manuscripts to Kathy Molina, Section of Ornithology, Natural History Museum 
of Los Angeles County, 900 Exposition Blvd., Los Angeles, CA 90007. For matters 
of style consult the Suggestions to Contributors to Western Birds (at www. western 
fieldornithologists . or g/docs/jour nal_guidelines . doc) . 
