North American Birds

VOLUME 69 NO3 2016

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/778845

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V O L U M E 6 9 ( 2 0 1 6 ) • N U M B E R S 3 / 4 493 S O U T H E R N C A L I F O R N I A (JSR); unfortunately, these numbers suggest ex- tensive nesting failures to the south. A Wilson's Storm-Petrel, rare in s. California waters, was off San Diego 14 Jun (PEL). Since Least Storm- Petrels are unknown in s. California waters ear - lier than mid-Jul, 2 off San Diego 14 Jun (GN), followed by 6 there 18 Jun (DPo), and one off Dana Point, Orange 4 Jul (BML) may also indi - cate nesting failures off w. Mexico. Two ad. Wood Storks at S.E.S.S. 5-15 Jul (AEK, GMcC) were the only ones known in California this year. A Red-billed Tropicbird 3 km off Dana Point 12 Jul (SC) and another photographed in the Santa Barbara Channel 6 km n. of Santa Cruz Island 31 Jul (JBa) made the only reports this summer. Reports of Mag - nificent Frigatebird were more numerous and widespread than in recent years, with at least 8 imms. along the coast that included singles at Batiquitos Lagoon, San Diego 15 Jun (TR) and what may have been the same bird over La Jolla 16 Jun (JMi), 6 km off the Palos Verdes Peninsula, Los Angeles 21 Jun (EC), and over the harbor in Ventura, Ventura on the same day (JBa), 2 together over Goleta, Santa Barbara 22 Jun (DMcC), one near Santa Cruz Island 7 Jul (fide PAG), one at the 9-Mile Bank off San Diego 17 Jul (TABl), and one over Goleta 29 Jul (TT); a short distance inland, an imm. was over Lake Murray in San Diego 21 Jun (AP), rences. A Black-bellied Whistling-Duck in Los Angeles County, endorsed as a natural vagrant by the California Bird Records Committee, was the first in the Region in 15 years. WATERFOWL THROUGH CORMORANTS A Black-bellied Whistling-Duck at Bonelli Regional Park in San Dimas, Los Angeles 2 Jul (RH) was believed to be a naturally occurring vagrant, the first in this Region since 2000. A long-staying Harlequin Duck at Estero Bluffs S.P., San Luis Obispo was still present 28 Jul (TME). The Long-tailed Duck on Morro Bay, San Luis Obispo since Mar was last seen 11 Jul (TME), and another was off Pismo Beach, San Luis Obispo 8 Jun (MDH). A Pacific Loon inland at Fig Lagoon near Seeley, Imperial 26 Jun (TABe) was exceptionally late for a spring migrant, as was a Common Loon at the same location 20 Jun (GMcC), but single Common Loons inland on Quail Lake, Los Angeles 11 Jul+ (JFG), s. of Salt Creek at the Salton Sea, Imperial 1 Jul (RMcK), and at N.E.S.S. (North Shore) 7 Jul (JS) were probably attempting to summer locally; an ad. in alternate plumage at P.P. 12-16 Jul (JBi) defies categorizing. Unusu - ally late-staying Horned Grebes were inland at P.P. 6 Jun (MSc) and the Coachella Wild Bird Center in Indio, Riverside 10-27 Jun (CMcG). A Northern Fulmar off San Diego, San Di- ego 29 Jun (KF) and another off Northwest Harbor on San Clemente Island 16 Jul (JTS) were evidently attempting to summer locally. A Flesh-footed Shearwater, exceptionally rare in s. California waters in summer, was in the Santa Barbara Channel between Ventura and Anacapa Island 13 Jul (DMax), and another was 15 km ne. of Santa Cruz Island 24 Jul (JBa). A light-morph Wedge-tailed Shearwater was seen from Point La Jolla in La Jolla, San Diego 17 Jul (PEL); there are only eight C.B.R.C.- endorsed records for California, one of those was from this exact location in 2013. A Buller's Shearwater, normally scarce in the waters off extreme s. California and not expected before late Aug, was off San Diego 10 Jun (PEL), followed by 17+ there 14 Jun (DPo), one near Anacapa Island 15 Jun (JBa), 2 there 17 Jun (DPe), another near Santa Barbara Island the same day (DPe), 10+ from China Point on San Clemente Island 18 Jun (JTS), and 5 from West Cove Point on San Clemente Island 22 Jun (NJD). Large numbers of Black-vented Shearwa - ters were off San Diego by early Jun, as indicated by 15,000 off La Jolla 7-8 Jun (PEL, SES); one was in the Santa Barbara Channel on the early date of 30 Jun (JBa), and small numbers were off San Luis Obispo as early as mid-Jul Russell D. Kokx, Alexander E. Koonce (San Bernardino), Karl Krause, Ken and Brenda Kyle (K&BK), Denise LaBerteaux, Paul E. Lehman, Scott Logan (SLo), Michael C. Long, Suellen Lynn (SLy), Doug MacCauley, Judy Matsuoka, Curtis A. Marantz, Wayne Martin, Guy Mc - Caskie (San Diego and Imperial), Chet Mc- Gaugh (Riverside), Chris McCreedy, John McKeever, Robert McKernan, Jimmy McMor - ran, Brandon Miller, Steve Morris, P. Gretchen Nell, Amanda Northrup, Gary Nunn, Brittany O'Connor, Ron and Nancy Overholtz (R&NO), Ed Pandolfino, Bob Pann, Robert T. Patton, David Pereksta (DPe), Cruz Phillips, Jim E. Pike, Dave Povey (DPo), David Rankin, Julia Ray, Sandra Remley, Bob Revel, Jim S. Royer, Mark Rubke, Matt Sadowski (MSa), Michael J. San Miguel, Brian Sandstrom, Larry San - sone (LSa), Dean Schaff, Robert Schallmann (RScha), Mark Scheel (MSc), Larry Schmahl (LSc), Roger Schoedl (RScho), Adam J. Searcy (Ventura), Allison M. Sheehey, Peter Siminski, Gregory P. Smith, Maggie L. Smith, Justyn T. Stahl (San Clemente Island), Susan L. Steele, John C. Sterling, Douglas G. Stinson, Steven D. Summers, Alexia Island Svejda, Julie Szabo (JSz), Peter Thomas, John Thomlinson, Eric Tipton, Michelle Tobin, Becky Turley, Gary Tuttle, David Vander Pluym, Lena Island Ware, Michael Warnock (MWa), Kenneth Weaver, Denise Wight (DeW), Dacia Wiitala (DaW), Douglas R. Willick (Orange), Kay M. Wilson, Michael Woodruff (MWo), Thomas E. Wurster, Roger H. Zachary, Benjamin Zlotnick (BZl), Ben Zyla (BZy). Many additional observers who could not be individually acknowledged here submitted reports; all have our thanks. –––––––––––––––––––––––––––––––––––––– SUMMER –––––––––––––––––––––––––––––––––––––– T he Region's weather was typically warm and dry for most of the period, though above-average rain fell in June on the northern coast and easternmost deserts. July was a bit cooler than average over most of the Region, and rainfall was above normal, some of this precipitation associated with the remnants of Hurricane Dolores, which passed over the area 18-19 July. Highlights of the summer season were rela- tively few, the most noteworthy occurrences being of subtropical waterbirds including a Wedge-tailed Shearwater, Red-footed Boobies, and at least 11 Magnificent Frigatebirds; though causation must surely vary among species, it is reasonable to presume that exceptionally warm ocean temperatures associated with a strongly developing El Niño were related to these occur - This immature Magnificent Frigatebird, one of at least 11 reported in southern California between 15 June and 29 July 2015, was over the 9-Mile Bank off San Diego, San Diego County 17 July 2015. Photograph by Thomas A. Blackman. Found at the sport fishing docks in San Diego Bay, San Diego County, California 5 July 2015, this subadult Red-footed Booby was the first of six to arrive along the San Diego, Orange, and Los Angeles County coasts by mid-September. Photograph by Gary Nunn.

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