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.

Issue link: http://nab.aba.org/i/605532

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V O L U M E 6 8 ( 2 0 1 5 ) • N U M B E R 4 553 s o u t h e r n c a l i f o r n i a Jul, including one high in the San Bernardino Mountains at Big Bear Lake 26 Jul (ETi) and an- other on the coast at Long Beach 27 Jul (DD), was about average. A Black Turnstone, casual inland in fall, was at S.E.S.S. (Obsidian Butte) on the early date of 24-25 Jun (GMcC, CAM). Seven Red Knots at S.E.S.S. (Obsidian Butte/ Young Rd.) 18 Jul (GMcC) were inland, where much scarcer in fall than in spring. A Ruff on the Santa Ana River at Anaheim, Orange 23-31 Jul+ (MH) was suspected to be one that spent last winter in that area. A Stilt Sandpiper at S.E.S.S. (Unit 1) 24 Jun (GMcC) was the earli- est this fall. Only 4 Baird's Sandpipers were re- ported, with 2 ads. at Owens Lake 26 Jul (SES) and single ads. at P.P. 29-30 Jul (JSF) and along the Colorado River below Parker Dam, San Bernardino 23 Jul (EH). An unexpected 9 ad. Pectoral Sandpipers were reported at various locations scattered throughout the Region 24- 31 Jul (JSF, LS, AKL, RAP), including 4 together at Goleta, Santa Barbara 30 Jul (NAL). The only Semipalmated Sandpiper reported was an ad. at P.P. 25-26 Jul (LS). A Red Phalarope on s. San Diego Bay 4-5 Jul (MSa), and another at Grover Beach, San Luis Obispo 17-18 Jun (AAF), were unusually late for spring migrants. SKUAS THROUGH GOATSUCKERS Single South Polar Skuas were seen off San Di- ego 20 Jun (PEL) and 15 Jul (DPo), the latter being between the typical peak periods of oc- currence in Southern California waters in May– Jun and Sep–Oct. A Pigeon Guillemot at La Jolla 5 Jun (PEL) was at the extreme s. limit of the species' known range. Since Scripps's Mur- relets are believed to move northward and far- ther off shore after nesting, with records from as far n. as the waters off British Columbia, the presence of 2 about 5 km off Point Loma 2-3 Aug (SW, GN) and 3 off Dana Point, Orange 12 Jul (TAB) were of note. Two Craveri's Murrelets photographed over the San Diego Trench off San Diego 7 Jun (LHo) provided an exception- morants known at the S.E.S.S. and elsewhere in the Imperial Valley, it comes as no surprise that two pairs were attending nests at Ramer Lake in Jun, with 2 young leaving one of the nests 10 Jul (GMcC) to provide the frst successful breeding record for California. Elsewhere, at least 4 were found along the Colorado River between Parker Dam and Earp, San Bernardino in Jun and Jul (EH, THy), where now regular, but one in the Riverside portion of the Prado Basin 27 Jun (JEP) was w. of the Coast Range. BITTERNS THROUGH PHALAROPES A Least Bittern at at Grass Valley Lake in the San Bernardino Mountains 27 Jun (BCS) was at an unexpected high elevation (1500 m). Single Reddish Egrets at Long Beach, Los Angeles 5-9 Jul (KQ), P.M.N.A.S. 9-25 Jul (DP), S.C.R.E. 19-27 Jul (KTeP) and Carpinteria, Santa Bar- bara after 6 Jul (LRB) made the only reports n. of San Diego and Orange. Two pairs of Yellow- crowned Night-Herons successfully fedged 6 young at Imperial Beach in Jul (GMcC, VM), but the outcome of a pair nesting at SeaWorld in San Diego is unknown. A Glossy Ibis at P.P. 11 Jun (JSF) provides the long-overdue frst re- cord for Los Angeles. A Northern Goshawk at Bear Camp on Big Pine Mountain, Santa Barbara 15 Jun (MAH) was at a known nesting location. The Broad- winged Hawk found on San Clemente Island 16 May was still present 14 Jul (BSS), provid- ing the frst summer record for California. Two pairs of Swainson's Hawks successfully fedged young in e. San Luis Obispo in Jul (MLS, KM); one near Brawley, Imperial 3 Jul (GMcC) was only the second found at the Salton Sink in that month, and 2 near Blythe, Riverside 17 Jul (CAM) were believed to be early fall migrants. A pair of Zone-tailed Hawks in the area of Mid- Hills in the Mojave Natural Scenic Area, San Bernardino 9 Jun (CAM) were likely nesting lo- cally; one near Blythe 23 Jun (JT) was far from any known nesting areas, and single birds near Escondido, San Diego 22 Jul (DeM) and near Oceanside 31 Jul (JP) provide early dates for the coastal lowlands. Sora is absent from Los Angeles southward in Jun and early Jul, so a calling bird at P.P. 8 Jun (JoB) was of note. Totally unexpected were sin- gle Sandhill Cranes over Irvine, Orange 1 Jun (RK), at the S.J.W.A. 3 Jun (TM), and over Mec- ca, Riverside 25 Jul (TAB); there are no previ- ous summer records for the Region. A Wilson's Plover at the Sweetwater Marsh N.W.R., Chula Vista, San Diego 10 Jun (RTP, MSa) was the only one known to reach California this year. A pair of Killdeer with 4 recently hatched young on San Clemente Island 15 Apr (JTS) provided the frst breeding record for the island. Eight Solitary Sandpipers in the Region after 10 ervoir near Big Pine, Inyo was joined by an al- ternate-plumaged bird 25 Jun–15 Jul (T&JH). A few Northern Fulmars remained off the coast into Jul, as indicated by single birds off San Luis Obispo 14 Jul (GPS), Los Angeles 20 Jul (KLG), and Orange 25 Jul (MSanM), along with 11 off San Diego during the frst half of Jul (PEL, KRo, DPo). Single Manx Shearwaters were photographed off Summerland, Santa Bar- bara 21 Jul (JBa) and Point Dume, Los Angeles 6 Jul (JFG, MSc). After the frst of the northward dispersing Black-vented Shearwaters were seen off Point Loma, San Diego 7 Jun (PEL), Point Vicente, Los Angeles 8 Jun (MSc), and as far n. as Shell Beach, San Luis Obispo 11 Jun (BKS), numbers quickly increased to 200 off La Jolla, San Diego 19 Jun (PEL), followed by focks of 25,000-30,000 or more along the coast from Imperial Beach to Oceanside, San Diego after 9 Jul, 50,000 off the Palos Verdes Peninsula, Los Angeles 20 Jul (MJB), and a similar number near Point Fermin, Los Angeles 23 Jul (DaM). Black- vented Shearwaters were also found much far- ther off the coast than expected, with 40 seen from West Cove Point on San Clemente Island 29 Jul increasing to a staggering 10,000 there 9 Aug (JTS). Unfortunately, the presence of such numbers this early in the summer suggests total nesting failure to the south. Up to 9 Wood Storks at Ramer Lake/S.E.S.S. (Hazard Unit) 24 Jun–10 Jul (GMcC), and 3 more at Ramer Lake on 13 Aug (GMcC), were the only ones known in California this year; number decrease every year, and the birds re- main for shorter periods, suggesting this species may no longer visit California in the near future. An imm. frigatebird, probably Magnifcent, seen from La Jolla 1 Jul (BM), along with one at S.E.S.S. (Garst Rd) 12 Aug (ZC) and another over Jacumba, San Diego the following day (EGK), made the only reports in the Region. What was probably the same imm. Masked/Nazca Booby was seen from La Jolla 19 & 21 Jun (PEL, DDiT, SW). An ad. Nazca Booby well photographed off Palos Verdes, Los Angeles 27 Jul (THa) is the frst to be identifed in California and the United States. Single Blue-footed Boobies seen from La Jolla 24 Jun (SW) and 23 Jul (PEL) and Border Field S.P., San Diego 26 Jun (MSa) prob- ably originated from the nearby Los Coronados Islands off Baja California, where at least 4 were still present 15 Jul (DP), and one on Anacapa Island at the end of the period (JBa) had been present since Sep 2013. Brown Boobies are now regular in the coastal waters off San Diego, with a high count of 10 from La Jolla 23 Jul (PEL); most, if not all, originate from the Los Corona- dos Islands, where 105 were counted on 15 Jul (DP). Farther to the n., one was at Santa Barbara Island 19 Jul (MV), and another was on Anacapa Island 29 Jun (JBa). With 30-40 Neotropic Cor- The only Wilson's Plover known in California in 2014 was this female at the Sweetwater Marsh National Wildlife Refuge in Chula Vista, San Diego County on 10 June 2014. Photograph Matt Sadowski.

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