North American Birds

VOLUME 70 NO1 2017

A Quarterly Journal of Ornithological Record Published by the American Birding Association. The mission of the journal is to provide a complete overview of the changing panorama of our continent’s birdlife.

Issue link: http://nab.aba.org/i/936087

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N O R T H A M E R I C A N B I R D S 124 B A J A C A L I F O R N I A P E N I N S U L A Rocha Brambila, Gorgonio Ruiz-Campos, Matt Sadowski, Edith Santiago, Bob Schall- man, Brad C. Singer, Gary J. Strachan, Mark Stratton (MSt), Ronald S. Thorn, Brian Uher- Koch, Jonathan Vargas, John Vooys (JVo), Enrique D. Zamora-Hernández. Records submitted to and accessed from aVerAves/ eBird were essential in the compilation of this report, and additional details on many of these records may be found there. n –––––––––––––––––––––––––––––––––––––– Richard A. Erickson, San Diego Natural History Museum, LSA Associates, 20 Executive Park, Suite 200, Irvine, California 92614 • richard.erickson@lsa-assoc.com Roberto Carmona, Departamento de Biología Marina, Universidad Autónoma de Baja California Sur, Apartado Postal 19-B, La Paz, Baja California Sur, México • beauty@uabcs.mx Gorgonio Ruiz-Campos, Facultad de Ciencias, Universidad Autónoma de Baja California, Km. 103 Carretera Tijuana-Ensenada, Ensenada, Baja California, 22800, México • gruiz@uabc.edu.mx U. S. MAILING ADDRESS: PMB 064, P.O. Box 189003, Coronado, California 92178-9003 dine de Jong, Gonzalo de León Girón, Tom Easterday, Gary Ender, Marcus England, Richard A. Erickson, George Flicker, Mary Flicker, Bob Friedrichs, Daniel Galindo Es- pinosa, José Emer García, Mary Gustafson, Tom Haglund, Robert A. Hamilton, Adriana Hernández Álvarez, Steve N. G. Howell, Rob Larson, Chris and Debbie Llewellyn, Gerar- do Marrón, Amy E. McAndrews, Robert B. McNab, Karen Medina-Pérez, Jorge Monte- jo, Heather Murphy, David W. Povey, Benito five 24 Oct–28 Nov; GF, MF), Lawrence's Goldfinches south to Cataviña (two 13-16 Oct; RAE, RAH). Up to 8 Scaly-breasted Mu- nias near the California border at Real del Mar 28 Sep–12 Oct (RAH, ph. RAE, MJB) will not be the last reported from the Region. Contributors: Víctor Ayala-Pérez, Leonie Batkin, Mark J. Billings, Thomas A. Black- man, Juan Butrón Méndez, Ken Chamber- lain, Marco Antonio Martínez Damián, Na- SA Cruise ships are common in our Region. A Gray-headed Junco found onboard one near Isla de Cedros at dawn on 8 Oct was still present 9 Oct as the ship passed within 1-2 miles of Cabo San Lucas and passed 22 09 63 N, 108 36 36 W in the afternoon. It could not be found at first light on 10 Oct at Puerto Vallarta. Other "landbirds" seen onboard during this passage included a Mourning Dove, 2 Chipping Sparrows, and 2 Western Meadowlarks on 8 Oct and 2 Marbled Godwits attempting to land on 9 Oct (all RST, LB). A cruise ship at Isla Cerralvo 28 Sep was temporary home for a Burrowing Owl, Belted Kingfisher, American Kestrel, Orange-crowned Warbler, and Clay-colored Sparrow (HM). Given the amount of ship traffic off west Mexico, one wonders how much bird distribution is affected. Central America pelagic species such as Waved Albatross in Cos- ta Rica are also likely visiting in-shore waters due to the ENSO phenomenon. No fewer than 7 first country records were reported in the region, the majority of species associated with pelagic or coastal waters, and no fewer than 6 of these from Honduras, where evidently some untapped potential remains. New for Honduras were Leach's Storm- Petrel, White-tailed Tropicbird, Surfbird, Sabine's Gull, Arctic Tern, and Steely-vented Hum - mingbird. New for Costa Rica was Roseate Tern. Two species that are usually rare anywhere in the region, American Avocet and Black-throated Blue Warbler, staged mini invasions and were reported from multiple countries this fall. DUCKS THROUGH RAPTORS An impressive 450 Fulvous Whistling-Ducks were at Crooked Tree Wildlife Sanctuary (CTWS) on 14 Aug (RM, RP, ShL, AL). While virtually confined in Belize to CTWS, numbers have been steadily increasing and they are now present nearly year-round. Infrequently report - ed in Central America, a female or non-br. male Cinnamon Teal was photographed at the Em - balse SASEC Lago Sur Birris (Cartago) in Costa Rica on 12 Nov (ph. DMa). Rare in Belize, 2 John van Dort Oliver Komar –––––––––––––––––––––––––––––––––––––– D uring fall of 2015, Central America was spared major Atlantic hurricanes, but from the Pacific, the region was affected by one of the strongest El Niño/Southern Oscil - lation (ENSO) events on record, a phenomenon that began in 2014. The warming of the East - ern Pacific produced some interesting records of species from the Humboldt Current, mainly in the southern part of the region. Increased observer coverage in the Honduran part of the Gulf of Fonseca, still a largely unknown area in terms of inshore pelagics, resulted in notewor - thy records, but none of species from the Hum- boldt Current. Nonetheless, good numbers of storm-petrels in the Gulf of Fonseca, and rare Green-winged Teal were an excellent find at Gra Gra Lagoon, Stann Creek on 23 Sep (RM). The range expansion of Eurasian Collared- Dove into Central America continues, with each season adding new locations on the northern coast or Bay Islands of Honduras. One individ - ual was present on 27 Aug on Guanaja (RRu), but was not seen there again. An adult male Maroon-chested Ground-Dove reported from a private reserve in Miramundo, Chalatenango on 13 Nov (ph. AM), proved to be only the third record for El Salvador. The first two records come from specimens collected in 1983 and 2001 respectively. Intriguing are reports of two Gray-capped Cuckoos on 6 Aug at Aruza Ar - riba in the Panamanian province of Darién, one of which was photographed (DA, GL, ph. TB). As many as three individuals were seen or heard at the same location on 12 Aug by the same observers (ph. GL), suggesting a local popula - tion. These reports established the second docu- mented record for Panama and North America, after a sound recording from the Darién in July 2012 (published in eBird). A Chuck-will's-wid - ow photographed at Sitio Arqueológico Yaxha on 26 Sep (JPC) is the first confirmed record for the department of Petén, Guatemala. In recent years, Oilbirds have been reported from Costa Rica in late summer and early fall. In 2015, one was at San Pedrillo in Corcovado NP, Puntarenas

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