North American Birds

VOLUME 69 NO2 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.

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V O L U M E 6 9 ( 2 0 1 6 ) • N U M B E R 2 275 Arizona the most numerous species was Ruddy Duck, with 782 present 12 Jan (TC, B. Burger). Red-throated Loon has also become an - nual in the state; this season's bird was off Pittsburgh Point, Lake Havasu 7 Dec (DVP et al.; ph. LH). Pacific Loons are expected in small numbers on Lake Havasu in winter; one continued from fall at B.W.D. and an - other joined it 7 Dec+ (PEL). They are casual elsewhere, so one at a golf course in Green Valley 27 Dec–13 Jan (ph. R. Rutledge) and another about 12 miles s. of there at Amado S.T.P. 1 Jan+ (K. Kuyper; ph. LH) were no - table. There were scattered reports of small numbers of Common Loons, but the 43 at Pot Cove, Lake Mohave 2 Feb (LHa) was the highlight. Least Grebes were reported again at Ruby Lakes, California Gulch 2-5 Jan (K. Kamper, P. Tersey). The only Horned Grebes reported away from the Colorado River were one at Lake Pleasant 21 Dec–1 Feb (KR) and 2 there on 30 Jan (TC). At Lake Havasu, the Horned Grebe high counts were 3 at B.W.D. 29 Dec (DVP) and 12 on the main body of the lake 8 Jan (DVP, LHa). Also just recently an - nual in the state, a Red-necked Grebe was on Lake Pleasant 28-30 Dec (T. Gaskill) and 30 Jan (†TC). Remarkably, the Red-necked Grebe and Horned Grebes were the only grebes de - tected on the 30 Jan Lake Pleasant waterfowl survey (TC). At Lake Havasu, the number of Eared Grebes present far exceeded previous highs and was remarkable for any inland sw. location away from the Salton Sea. Counting the birds in photos yielded 51,800 present 5 Dec (DVP) followed by 64,000 on 7 Dec (DVP) (with an additional 40,000 on the California side of the lake). At Watson Lake, 296 was a good count 5 Dec (W. Anderson). At Cholla Lake, one to 2 Neotropic Cormorants 1-6 Dec (EH) were remarkable that far n. in winter and made only the second record for Navajo. The Greater Phoenix Waterbird Survey turned up a new high count of 3137 Neotropic Cormo - rants 17 Jan (fide TC), includ- ing 30 ads. on or near nests in Chandler (DPe, C. Babbitt). Tucson hosts the second largest concentration of this species in Arizona, and the season's high count there of 164 at Sam Lena Park 26 Feb+ (J. Medina) is likely the all-time high for se. Arizona. Conversely, the 417 Double-crested Cormorants on the Phoenix survey 17 Jan (fide TC) was the all-time low for that survey, and they remain scarce in the Tucson area. An American White Pelican was rare n. of the Mogollon Rim 2 Trumpeter Swans at Sweetwater 28 Jan (B. Lichtenhan; ph. AC et al.); they are casual any - where in the state. As usual, just a few Eur- asian Wigeons were found, with one at Dos Lagos, Glendale 31 Dec–13 Mar (R. Carlson), one at Chandler 17 Jan (DPe, C. Babbitt), and 2 at Cibola N.W.R. 2 Feb (DVP). The high count of Greater Scaup at B.W.D. this season was 316 present 29 Dec (LHa, DVP). All three scoter species were reported this season. At Lake Havasu, 2 Surf Scoters were at B.W.D. 23 Dec (DVP, LHa) and one was off Pittsburgh Point 2 Jan (LHa, DVP). White-winged Scoters have also become more regular. An ad. male was at B.W.D. 20 Dec (T. Fulton, fide LHa), another was on Lake Pleasant 21 Dec–27 Jan (KR; ph. CRo), one was seen on Lake Pow - ell 5 Jan (fide G. Nealon), and one was at Sun City 27 Feb (ph. V. Miglio). Remarkably, Black Scoter has become annual during this decade; 2 were on Lake Pleasant 21 Dec–1 Feb (KR; ph. CRo). Long-tailed Ducks were found in small numbers, with one on Saguaro Lake 12 Dec (D. Herron, W. Herron, ph. D. Witter), up to 2 at Snowflake 2-9 Jan (N. Worth, ph. C. Worth), and perhaps the same bird again at Saguaro Lake 12 Jan (TC, B. Burger). A count of 311 Buffleheads was the all-time high for the Prescott C.B.C. 18 Dec (fide C. Tomoff). Surprisingly, the most abundant species on a waterfowl survey of Lake Pleasant 30 Jan (TC et al.) was the 153 Common Goldeneyes; they are most common in Arizona along the Colo - rado River. Barrow's Goldeneyes are rare in the L.C.R.V. away from B.W.D. The high count there was 14 seen 5 Jan (DVP, LHa). On the same date, 4 were seen at their other favored Arizona location, Glen Canyon Dam (C. LaRue et al.). A Barrow's at Big Springs, Pinetop 7 Jan (ph. S. Fish) was probably the first for Navajo. The Prescott C.B.C. had another high count, with 57 Hooded Mergansers 18 Dec (fide C. Tomoff), a large number anywhere in the state. On the Saguaro Lake waterfowl survey, Mark M. Stevenson Gary H. Rosenberg –––––––––––––––––––––––––––––––––––––– A nother very warm winter in Arizona was associated with late departures, early arrivals, and unusually elevated numbers of wintering individuals of multiple species. Abbreviations: B.W.D. (Bill Williams Delta, Lake Havasu), G.W.R. (Gilbert Water Ranch), Sweetwater (Sweetwater Wetlands, Tucson), Whitewater (Whitewater Draw W.A.). WATERFOWL THROUGH FALCONS The Black-bellied Whistling-Ducks at White- water during fall lingered through 3 Jan (m.ob.). Fulvous Whistling-Ducks occur less than annually in the state, so one near Palo Verde 20 Dec (ph. C. Donald) and up to 8 at Tres Rios, Phoenix 20-22 Dec (†TC) were remarkable. A Ross's Goose was locally rare at high elevation at Flagstaff 10-23 Dec (JC). Cackling Goose remains a sparsely distributed species in the state, even as observa - tions accumulate. This winter pro- duced more reports than usual, with 4 at Cibola N.W.R. 5 Dec (PEL; ph. LHa) and 2 there 2 Feb (ph. DVP, LHa), one at G.W.R. 20-27 Dec (A. Leight), one at Chandler 21 Dec–25 Jan (M. Weber; ph. D. Clark), another at Chandler 3-13 Jan (D. Wilder), one at Lee's Ferry 3 Jan (B. Gatlin), one on the Camp Verde C.B.C. 4 Jan (R. Armstrong, ph. S Hough), and one at Scottsdale 17 Jan (ph. M. Beisel). At Flagstaff, a new high count of 2200 Canada Geese on the C.B.C. (fide T. Blows) likely reflected the warm win - ter. Quite an unexpected sight were These Trumpeter Swans were photographed at Tucson 28 January 2015. Arizona has five previous records of the species. Photograph by Scott Olmstead.

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