North American Birds

VOLUME 69 No1 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/629070

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V O L U M E 6 9 ( 2 0 1 5 ) • N U M B E R 1 159 B A J A C A L I F O R N I A P E N I N S U L A Laguna Ojo de Liebre 2 Oct (VAP), but see North American Birds 67: 164-165. Franklin's Gulls were near the California border s. of Nine Mile Bank 29 Oct (ph. TAB et al.) and in the La Paz area 28 Sep–30 Nov (up to 2; JV et al.). Late Least Terns were again found on dates es - sentially unheard of n. of the California border: Guerrero Negro saltworks 19 Oct (6), Laguna Ojo de Liebre 22 Oct (3), and Estero San José 8 Nov (one; all GM et al.). A Forster's Tern at Cat - aviña 19 Oct (RAE, RAH, SNGH) was the frst recorded at this frequently visited landbird site. PIGEONS THROUGH FINCHES Seventeen Band-tailed Pigeons at Robledo 13 Oct (†KC) established the frst Sierra San Pe - dro Mártir record since 1987 (Monographs in Field Ornithology 3: 126) and were harbingers of things to come. Also rare in Baja California was a male Ruddy Ground-Dove at Bahía de los Ángeles 25 Oct–2 Dec (GF, MF). Rare anywhere in the Region, single Lewis's Woodpeckers were at Robledo 14 Oct (†KC) and El Rosario 18 Oct (ph. SNGH, RAE, RAH), and 2 Downy Wood - peckers were at Tecate 5 Nov (RL). Downy Woodpecker had been seen regularly at Tecate from Mar 2007 through Nov 2010 but not since. The third of Ayala-Pérez's new species for Isla Cedros was a Black Phoebe on 30 Sep. North of the Cape District, Tropical Kingbirds were on the Maneadero Plain 7 Oct (RAE), at Guerrero Negro 19 & 26 Oct (ph. GM), and at Bahía Asunción 20 Oct (3; RAE et al.). One at Campo Alianza, Ciudad Constitución 6 Nov was at a new location and was in the vicinity of a Western Kingbird and a Scissor-tailed Fly - catcher (ph. GM; all VAP, GM, RAE). An Eastern Bell's Vireo was at Rancho San José de Castro 21 Oct (ph. RAH et al.). Like the two previous state records, this one was on the Vizcaíno Peninsula in fall. Also ftting within established patterns were Yellow-green Vireos at La Bufadora 7 Oct (MJB) and Punta Banda 18 Oct (RAH). Attesting to the current rarity of the species in the Region, a Sage Thrasher at El Rosario 23 Oct (ph. SNGH, RAE) was the frst District; one at Lagunas de Chametla 7 Nov (CL, RAE) was at a new locality. A Broad-winged Hawk was also in the Cape District, at Santiago, 5 Nov (RAE, ph. GM). More signifcant was a juv. dark-morph Broad-winged Hawk (ac - companying a juv. light morph) in Baja Califor- nia, at El Rosario 8 Oct (†RAE, MJB), the frst such plumaged bird to be confrmed in the Re - gion (cf. North American Birds 61: 515). In Baja California Sur, an early Swainson's Hawk was at Pichilingue 20 Aug (†GM), and 4 were n. of Ciudad Insurgentes 28 Nov (GJS). Reports from Isla Guadalupe are precious, and this season included the following shore - birds: 2 Semipalmated Plovers 21 Aug, 6 Great- er Yellowlegs and 10 Spotted Sandpipers 6 Aug, and 5 Ruddy Turnstones 5-6 Aug (MARD). The frst two species were previously unrecorded on the island. Two Mountain Plovers at La Salina, near San Quintín 15 Oct (†EDZH) were in a new location, just s. of the area from which al - most all Regional reports have come this centu- ry. Shorebird coverage was again weak; for the third consecutive year, Solitary Sandpiper and Baird's Sandpiper were unreported in Baja Cali - fornia. Solitary Sandpiper was also unreported in Baja California Sur, where single Baird's Sandpipers were at Lagunas de Chametla 6 Aug (LFM) and Llanos de Hiray 25 Oct (VAP, JV). Twelve Pectorals Sandpipers were at Lagu - nas de Chametla 6 Aug–13 Nov, but the only one in Baja California was at Laguna Chapala 19 Oct (RAH, SNGH, RAE). The rarest shorebirds were a Ruff at Guerrero Negro 20-22 Oct (AHA, ph. SNGH, ph. GM et al.), a Stilt Sandpiper at Lagunas de Chametla 7 Nov (CL), and a Semipal - mated Sandpiper at Lagunas de Chametla 29 Jul (ph. GM, JEG). Cleaning up the re - cord tables (cf. Great Blue Heron above), 27 Red-necked Phalaropes at Isla Cedros 30 Sep (VAP) represented the frst formal report from there. A Long-tailed Jaeger was a surprise at Un Recurso Estratégico, Instituto Nacional de Ecología, D.F.). The species has been recorded on all other Pacifc islands off Baja California except for rarely visited San Jerónimo. An imm. Little Blue Heron again visited northerly Estero Punta Banda, this time 7-18 Oct (ph. RAE, MJB et al.). A Cattle Egret at Laguna Chapala 22 Oct (SNGH, RAE, RAH) was unexpected in the Vizcaíno Desert. An ad. Yellow-crowned Night-Heron was at Estero Punta Banda 10-11 Oct (†KC). The species has traditionally been very rare in n. Baja California, but with the re - cent colonization of s. California, more are to be expected. Red-shouldered Hawk is rare in the Cape Ruf is one rare shorebird that has been disproportionally well reported in Baja California Sur. On 21 October 2014, this juvenile female was at Guerrero Negro, where the species had been found four times before. Photograph by Steve N. G. Howell. Just inside Mexican waters, this Franklin's Gull was near Coronado Canyon, Baja California 29 October 2014. Photograph by Thomas A. Blackman. It was another slow season for vagrant landbirds on the Baja Califor - nia Peninsula, but one of the highlights was this Eastern Bell's Vireo at Rancho San José de Castro, Baja California Sur 21 October 2014. Photograph by Gerardo Marrón.

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