North American Birds

VOLUME 68 NO4 2015

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.

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N O R T H A M E R I C A N B I R D S 556 s o u t h e r n c a l i f o r n i a –––––––––––––––––––––––––––––––––––––– Guy McCaskie, 954 Grove avenue, imperial Beach, california 91932, (guymcc@pacbell.net) Kimball L. Garrett, natural history Museum of los angeles county, 900 exposition Boulevard, los angeles, california 90007, (kgarrett@nhm.org) Walens, John Walters, Kyle Weichert, Doug- las R. Willick (Orange), John C. Wilson, Ryan Winkleman, Maxine Wolf, Thomas E. Wurster, Kevin J. Zimmer. Many additional observers who could not be individually acknowledged submitted reports; all have our thanks. n Sterba, Frank Sterrett, Doug G. Stinson, Annie Stockley, Brian L. Sullivan, Elisa Taylor-God- win, Kyle TePoel, Robert Theriault, Ed Thomas (ETh), Eric Tipton (ETi), Jennifer Tobin, Gary Tuttle, Philip Unitt, Wim van Dam, Matt Vic- toria, Robyn and Gary Waayers (R&GW), Stan was the earliest recorded there. Previous records extend from 23 Jul–20 May. HUMMINGBIRDS THROUGH BLACKBIRDS Unusual late, early, and/or summer records of Cassin's Kingbirds on the winter grounds in Baja California Sur have been noted previously. Scaup (all ph. GM). Two Redheads at La Puri- sima 30 May (GM et al.) and one at Nopoló 9 Jun (TH) were at potential nesting sites. One Northern Fulmar remained near Islas Coronado 15 Jul, but the bedraggled bird was unable to fy (ph. NC). Wood Stork in the Cape District this season? Check: La Paz area 14 Jun–29 Jul (ph. GM et al.). And boobies at Islas Coronado? Yes, an imm. Masked/Nasca Booby 15 Jul–17 Aug (ph. NC, ph. JB et al.) and 4 Blue-footed and 105 Brown Boobies 15 Jul (DWP et al.). A few species typically associated with the coast regularly range inland as far as the La Purisima/San Isidro area. Examples from May 2014 included 4 Magnifcent Frigatebirds, 3 Brown Pelicans, and an Osprey 30-31 May (NA et al.) and a Reddish Egret 4 May (TH). The only frigatebird seen on the Pacifc coast of Baja California was at Bahía Camalú 25 Jul (PW). In the Ensenada area, Ospreys began nesting at El Sauzal in 2004 and numbers have gradually in- creased since. This year, nesting was confrmed at six sites between El Sauzal and La Bufadora (MAMD, EDZH, RAE). Seven Greater Yellow- legs 1-18 Jun (unseasonable) nearly extended the length of the peninsula (PB, AH, RAE). The highlight of a boat trip on Bahía de Sebastián Vizcaíno (off Laguna Ojo de Liebre) 28 Jul was a South Polar Skua (VAP). A belated report in- volved an ad. Franklin's Gull at the Ensenada dump 21 May (ph. MAMD). Also in May, 43 Yellow-footed Gulls were on the Pacifc coast of Baja California Sur at San Juanico 31 May (VAP et al.), where large numbers of this Gulf of Cali- fornia near-endemic have been reported previ- ously. A Gull-billed Tern at La Paz 5 Jul (AH) Richard A. Erickson Roberto Carmona Gorgonio Ruiz-Campos –––––––––––––––––––––––––––––––––––––– S everal interesting summer records from the Cape District were highlighted by a Yellow-green Vireo, the frst non-fall re- cord for the Region. We are pleased to report a number of nesting birds in the Loreto/Nopoló area. Confrmed breeders found by Haglund included Least Grebe, American Coot, White- winged Dove, Gila Woodpecker, Black Phoebe, Vermilion Flycatcher, Western Scrub-Jay, Violet-green Swallow, Verdin, Gray Thrasher, Brown-headed Cowbird, and House Finch. In Baja California, evidence mounted for the frst Mexican nestings of Allen's Hummingbird, and Regional nesting of Barn Swallow was confr- med for the frst time in about 40 years. DUCKS THROUGH TERNS There are typically a few unseasonable ducks to report each summer. This year a Blue-winged Teal was at Lagunita El Ciprés 18 Jun (RAE); Northern Pintails were at Laguna Guerrero Ne- gro 1 Jun (4, ph. PB), near Puerto Mateos 11 Jun (PB), and La Misión 18 Jun (RAE); a Red- breasted Marganser was at Estero Punta Banda 18 Jun (RAE); and the following were at the Guerrero Negro saltworks 29 Jun: one Ameri- can Wigeon, 12 Northern Pintails, and 8 Lesser Baja California Peninsula This Barn Swallow nest with nestlings was photographed at Cantamar, Baja California 18 June 2014. Baja California nesting has been poorly documented, and none had been reported since the 1970s. Photograph by Richard A. Erickson. This Horned Lark was found feeding young at El Centenario, Baja California Sur 14 May 2014. The species historically nested south only to the Magdalena Plain but has apparently responded to agricultural development in the La Paz area. Photograph by Gerardo Marrón. sa The sedentarius subspecies of Allen's Hummingbird has been expanding its range in coastal s. California since breaking free of its Channel Islands roots in the 1960s. A surge in winter records of Selasphorus hummingbirds in nw. Baja California this decade apparently represents the beginning of Allen's Hummingbird colonization of that urban corner of the state. At least one male Allen's Hummingbird was at Real del Mar 18 Apr and 18 Jun, along with female Selasphorus hummingbirds. A used nest found on the former date was be- lieved to have been used by Allen's, but comparison of the nest with material at the Western Foundation of Vertebrate Zoology was inconclusive. Another female Selasphorus was seen in Ensenada on the unusual date of 18 Jun. More tangible nesting evidence was obtained at Real del Mar on 6 Oct, when a female was seen collecting nest material. Details of these and subsequent observations have been submitted for publication elsewhere (all RAE).

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