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 / 4 491 S O U T H E R N C A L I F O R N I A from the coast. Four Lesser Black-backed Gulls at Salt Creek 25 Apr (CMcG) were the latest of the wintering birds on the Salton Sea. A late Glaucous Gull was at the S.J.W.A. 21 Mar (CMcG). Up to 2 Least Terns were at P.P. 24- 31 May+ (VB, JSF), and 2 were around S.E.S.S. after 25 Apr (GMcC); there was no evidence of nesting at either location. Up to 4 Gull-billed Terns at Bolsa Chica, Orange 16 Apr–10 May (RScho) and 2 at Playa del Rey 11 Apr (JCof) were n. of the only coastal nesting site on s. San Diego Bay. Elegant Terns arrived earlier than expected, with 2 on s. San Diego Bay 20 Feb (MSa) and one at Carlsbad 23 Feb (SB); one at Silver Lake Reservoir near downtown Los Angeles 7 May (DRW) and 2 at S.E.S.S. (Rock Hill) 14 May (KLG) were inland, where very rare. Three Common Terns at S.E.S.S. (Unit 1) 25 Apr (GMcC) were somewhat early for this inland location. PIGEONS THROUGH THRASHERS Single Band-tailed Pigeons at G.H.P. 29 Apr and 19 May (K&BK), in lower Jawbone Can - yon, Kern 23 May (LBH), and at nearby But- terbredt Springs 25 May (TEW) were well away from areas of normal occurrence. Only 4 White-winged Doves were found along the coast, with all found between 21 Apr and 2 May, but 2 at Santa Ynez, Santa Barbara 2 Apr (CP) were certainly unexpected. A Greater Roadrunner at Carson, Los Angeles 16 Mar (JT) was the first in that general area since 1983; the nearest area where of regular occurrence is 25 km to the northeast. Three Black Swifts near Fallbrook, San Diego 25 Apr (KW) were early, but additional numbers along the coast were disappointing, with only 10 reported in Santa Barbara and San Luis Obispo 2-20 May, but 14 over the S.J.W.A. 24 May (HBK) and one over Butterbredt Springs the same day (DVanP) were noteworthy. Most observers reported Cal - liope Hummingbirds as more numerous than average throughout the Region, supported by such numbers as 50+ in Santa Barbara 3 Apr– 13 May and as many as 5/day in Imperial 30 Mar–14 May. Single Acorn Woodpeckers near Deep Springs College, Inyo 1 May (J&RG), at Cot - tonwood Spring in Death Valley N.P. 30 Apr–1 May (C&RH), at Newberry Springs, San Ber - nardino 4-6 May (AN), and at Nipton, San Bernardino 16 May (AK), along with 8-10 at various locations in the Kern desert 12 Apr–29 May, were all well to the e. of this species' range in California. A Gilded Flicker at Cima Dome in the Mojave National Preserve 25 May (AEK) indicates this species still persists in this area— the last place in California where the species is known to occur. Its numbers in California should be monitored. A Crested Caracara was at Lake Henshaw, San Diego 18 Mar (GN). Late migrant Merlins included single birds at Los Osos, San Luis Obispo 3 May (JSR) and the Ti - juana River mouth 3 May (PEL). We always like to emphasize well-docu - mented arrival dates for Willow Flycatchers, as they are routinely reported in Apr with in - sufficient documentation; arrivals this spring included singles 8 May at the Carrizo Plain N.M. (the earliest for San Luis Obispo by four days; TME) and 9 May at Canebrake, Kern (DLaB), and 10 birds in the Imperial Valley 10 May (GMcC). Outside its expected range, a female Vermilion Flycatcher was construct - ing nest at Carrizo Plain N.M. 5-6 Apr (MLS), but no male was found, and the female was not seen again; breeding was documented at Lone Pine, Inyo with a pair feeding a fledgling 9-12 May (RDK). A Dusky-capped Flycatcher at Fullerton, Orange 16 Mar–15 May (MiH) had clearly wintered locally. A Tropical King - bird on the Palos Verdes Peninsula, Los Angeles 30 Apr (PC) was not known to have wintered, but spring vagrants are virtually unknown in the Region. A female Scissor-tailed Flycatcher returned to Santa Paula, Ventura 2 May+; once again mating with a Western Kingbird, she was on eggs 26 May, but the eggs were ejected by House Sparrows 8 Jun (GT, KK); others were at Playa del Rey, Los Angeles 16-27 Apr (DS, YC), Primm Valley, San Bernardino 6 May (BZl), and Laws, Inyo 22-25 May (DJH). The earliest Bell's Vireo to arrive was 11 Mar in the Tijuana River Valley, San Diego (EH); up to 29 birds on the Amargosa River in far n. San Bernardino 24 May was an encourag - ing concentration (CMcC). Yellow-throated Vireos, casual in spring, were at Huntington Beach, Orange 8 May (RScha), California City, Kern 24 May (JCS), Point Loma 30-31 May (GN), and Warm Spring at the se. end of Death Valley N.P., Inyo 31 May (JEP). A Plumbeous Vireo was at N.E.S.S. 7 May (RMcK); there are no spring specimens for the Salton Sink; pos - sible spring migrants in San Diego (not known to have wintered) were at Santee 26 Apr (PT) and San Elijo Lagoon 11 May (RTP). Purple Martins arrived at breeding sites at Atascadero, San Luis Obispo 16 Mar (RHZ); a notable count of 21 migrants was made at the S.J.W.A. 24 May (HBK). An estimated 500,000 Tree Swallows were at Lake Havasu on both sides of the state line 8 Apr (DVanP). Townsend's Solitaires wandered to Point Loma 24 Apr (PT) and San Clemente Island 19 May (MJB). A very late migrant Hermit Thrush was on San Clemente Island 28 May (LIW). The latest Varied Thrush lingering from the fall and winter invasion was an apparently injured bird at G.H.P. 19 May–17 Jun (K&BK). Scarce and apparently declining in the Region, a Bendire's Thrasher was at Smoke Tree Wash in Joshua Tree N.P., Riverside 26 May (JSz). WARBLERS THROUGH FINCHES Ovenbirds were at Redondo Beach, Los Angeles 28 May (MR) and Santa Barbara Island 29 May (JH); another 6 were on the deserts 3-28 May. Seven Northern Waterthrushes passed through the n. deserts 9 May–6 Jun; another migrant was at Los Osos, San Luis Obispo 17-19 May (DC, JCC), while birds in the Tijuana River Valley 12 Apr (PEL) and at S.J.W.A. 16 Mar–5 Apr (CMcG) likely wintered locally. Late spring Black-and-white Warblers surely represent - ing spring vagrants included 4 in coastal San Diego 12-31 May and one at South El Monte, Los Angeles 20 May (JSF); 14 were on the des - erts 28 Apr–3 Jun. A MacGillivray's Warbler at Templeton 20 Mar was one day earlier than the previous earliest record for San Luis Obispo. The only Kentucky Warbler was at Bishop 11- 17 May (R&NO). Spring vagrant Tennessee Warblers were on the coast at Point Loma 12 May (GN) and Ventura 27 May (RMcM) and on the n. deserts at Warm Spring at the se. end of Death Valley N.P. 31 May (JEP), California City 4 Jun (K&BK), and G.H.P. 11 Jun (AH). A Lu - cy's Warbler at Agua Caliente County Park, San Diego 6 Mar (EP) was the earliest this spring; one on the extreme s. border of E.A.F.B. 18 Apr (JSF) was a bit outside the known breed - ing range. Hooded Warblers appeared on Point Loma 12 May (GN) and at G.H.P. 24 May (JCS). Spring American Redstarts included 8 on coastal slope and islands 10 Apr–17 Jun and another 15 on the deserts 3 May–6 Jun. The first spring Cape May Warbler in the Re - gion in many years was a male at Marina del Rey, Los Angeles 21 Apr (DSC). Six Northern This Common Black Hawk was one of two, possibly a pair, at the Palo Verde Ecological Reserve on the Colorado River near Blythe, Riverside County, California 14-25 (here 25) April 2015. Photograph by Larry Sansone

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