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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N O R T H A M E R I C A N B I R D S 484 N O R T H E R N C A L I F O R N I A The fall-winter invasion of Lewis's and Acorn Woodpeckers fizzled out in spring, with no especially notable numbers or occurrences. A Williamson's Sapsucker along Hwy. 36 on the Shasta/Trinity border 4 May (JSL) provided the first spring record for Trinity. Although this species may be resident in the ne. portion of the county, this bird was about 100 km sw. of that area. Six Yellow-bellied Sapsuckers in - cluded 5 coastal (one in Marin, 2 in San Mateo, one in Santa Cruz, and one in Monterey) and one inland at O'Neill Forebay, Merced 12 Mar (PDu, FrO), continuing from winter. Similarly, 8 Red-naped Sapsuckers involved 5 coastal and bayside birds (one in Solano, one in Alam - eda, 2 in Santa Clara, and one in Santa Cruz) and 3 inland (2 in Lassen and one in Merced). An unusual movement of Pileated Woodpeck - ers brought one to the Presidio 16 Apr (the third or fourth for S.F.; HuC, BFi, LKh), 3 to Contra Costa, and 2 to Monterey. All but one occurred within the period of 14-29 Apr; the outlier was one at Lake Anza, Contra Costa 17 May (Christine Woo). Large numbers of Hammond's Flycatchers moved through Santa Clara, with 10 reported 3 Apr–23 May (twice the average fide WGB), and Mono, with 39 reported 26 Apr–31 May (a new seasonal high count fide KNN). All but one of Napa's records of Gray Flycatcher have come from Wild Horse Ridge; one bird there 27 Apr and another there 1 May (ph. MBe) provided the fifth and sixth records for the county. Black Phoebes continue to increase their presence in Lassen, with multiple reports during the sea - son, including from as far e. as Biscar Reservoir and Honey Lake (fide KAb). Typical for the sea - son, 2 Eastern Phoebes were reported: one at Pescadero, San Mateo 8 Mar (LFl), and another at Bolinas Lagoon, Marin 18 Mar (JsC). So - noma's first Vermilion Flycatcher was a female along the Santa Rosa Creek trail in Santa Rosa 20 Apr (DgSh). Another at Oasis Ranch 22-23 May (PJM, ADeM) established the third spring record for Mono. Tropical Kingbirds, most con - tinuing from winter, included one in S.F., 2 in San Mateo, one in Contra Costa, and 2 in Santa Cruz. Scarce anywhere along the Region's im - mediate coast, a Cassin's Kingbird stopped in at the lighthouse at Point Reyes N.S., Marin 30 Apr (ph. DSg). Our only Eastern Kingbird vis - ited F.I. 25-27 May (Point Blue). The most thought-provoking find of the season was a "brown" shrike in Manchester, Mendocino 5 Mar–22 Apr (ph. Alison Cebula, ph. m.ob.). Not clearly a Brown Shrike (Lanius cristatus), for which there are three previous re - cords for California, this bird most closely re- sembled a Red-backed Shrike (Lanius collu- rio) x Turkestan Shrike (L. phoenicuroides) hybrid (see North American Birds 69: 4-35). only two prior records. Six Black Terns at Lake Camanche 14-15 May (TEa, TS, Greg Hemig) were seen in both Calaveras and Amador, pro - viding a first or second record for the latter county. The wintering Common Tern at Arcata Marsh, Humboldt lingered through 16 Mar (EE, RbF). Elegant Terns were early, with 2 at Boli - nas Lagoon, Marin 20 Mar (ph. PP), 24 at Ter- race Point, Santa Cruz 21 Apr (AMR), and 2 at Mountain View 20 Apr (Jason St. Pierre, Cole Jower), the latter providing the first Apr record for Santa Clara. Black Skimmers included the expected breeders in S.F. Bay and migrants in Monterey and Santa Cruz, whereas one at Ocean Beach 10 May (HuC, PSar) provided only the fifth S.F. record. DOVES THROUGH THRUSHES The Band-tailed Pigeon incursion in the low- lands continued well into spring, highlighted by what may have been Modesto's first record, involving 2 birds at Tuolumne River R.P., Stan - islaus 19 Apr (HMR). The last lowland report of the season was of a single bird at Oroville, Butte 27 May (Carol Anderson). Our only White-winged Dove was at San Mateo, San Ma - teo 28 May (ph. Mike Aicardi). A Great Gray Owl with a broken wing found at Lake Mary near Mammoth Lakes 22 May (fide KNN) pro - vided only the second or third record for Mono. Astounding numbers of Anna's Humming - birds visited multiple feeders at a residence in Carmel Valley, Monterey during the period; the peak estimate of more than 900 on 30 Apr (PFw), based on timed counts and presumed turnover rates from the literature, recalled den - sities at certain feeders in the mountains of Ari- zona. This total eclipsed our previous highest one-day estimate of 150 at Springville, Tulare 6 Sep 1980. A female Costa's Hummingbird at Napa 10 Apr (Craig Cummings) established about the fifth record of that species for Napa. A total of 38 ad. male Rufous Hummingbirds at Summit Ridge 11 Apr (JGa, AMR, Nicholas Kronick) represented a strong showing for Santa Cruz. Also impressive were 20 ad. males at nearby Loma Prieta Ave. on the Santa Cruz/Santa Clara border 17 Apr (JGa, Kevin Condon, Nicholas Kronick). A high count of 7 Calliope Humming - birds at Summit Ridge 17 Apr (JGa, Nicholas Knonick, m.ob.) more than doubled the previous record of 3 for any spring season in Santa Cruz. Like - wise, 10 in Monterey during the pe- riod established a new seasonal high count for that county (fide DR), and 5 at Dinosaur Point Rd. 1 May (MMR, RGJ, RFu) set a new single-locality high count for Merced. SKUAS THROUGH SKIMMERS The only South Polar Skuas reported were off Eureka, Humboldt, with singles on 15 (RbF, SMcA, Mark Colwell et al.) & 21 May (PEL et al.). Long-tailed is the least frequently reported jaeger in spring; singles were off Monterey 6 May (PEL, Gary Nunn, JCS, Monte Taylor et al.), Trinidad Head, Humboldt 13 May (PEL et al.), and Eureka, Humboldt 15 May (RbF, SMcA, Mark Colwell et al.). Nine Scripps's Murrelets were seen on four dates, 7-21 May, between Mendocino and Del Norte. The total of 75 Sa - bine's Gulls, mostly alternate ads., between Monterey and Mendocino 20 Mar (JCS, Tom Crabtree et al.) was exceptional for such an early date. A good count of 5400 northbound Bonaparte's Gulls passed Pigeon Point, San Mateo 14 Apr (RSTh). Our only Laughing Gull was an ad. at Half Moon Bay, San Mateo 4-5 May (AJ et al.), while 8 Franklin's Gulls in six counties 29 Apr–25 May represented a modest showing. Among 3 Mew Gulls lingering into May, the latest was present through the peri - od at Lake Merced, S.F. (m.ob.). Single Lesser Black-backed Gulls, both on 12 Mar, were at Lake Elizabeth, Alameda (ph. Jerry Ting) and Folsom Lake (third or fourth for Placer; RPz). Five Glaucous Gulls were recorded, the latest being at Half Moon Bay, San Mateo 11 May (MDeF, CHy). California's first Kelp Gull was well documented at Año Nuevo S.R., San Ma - teo 27 Apr (ph. Bob Siegel), Half Moon Bay, San Mateo 20 May (ph. AJ), and F.I. 24-29 May (ph. Point Blue); the same ad. was thought to be involved in all three appearances. This bird represented the first North American record w. of Colorado. A Gull-billed Tern s. of Corco - ran, Kings 26 Apr–2 May (ph. MSy, m.ob.) may have been the same individual recorded there last May; one at the Pajaro River mouth 16 May (ph. JGa, Nicholas Kronick) was seen in both Santa Cruz and Monterey, providing a first record for each county. The Region had The two Wedge-rumped Storm-Petrels mist-netted at Southeast Farallon Island in Marin County, California in spring 2015 (here 20 May) were the northernmost individuals recorded to date anywhere in the Pacific. Photograph by Daniel Johnston.

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