North American Birds

VOLUME 68 NO2 2015

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/502371

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N O R T H A M E R I C A N B I R D S 258 the L.C.R.V., with 22 reported 4 Dec–31 Jan. Red-throated Loon continued the recent pat- tern of being annual on Lake Havasu. One was seen briefy off Windsor Beach 7 Dec (†DVP), and 2 were at the n. end 11-18 Jan (†DVP, LHa; †LH). Expected in small numbers each win- ter, 2 Pacifc Loons were on Lake Havasu 9-15 Jan (LHa, DVP), and one continued through 8 Feb (DVP). A peak of 28 Common Loons on Lake Havasu 9 Jan (LHa, DVP) was a strong count for winter. Elsewhere, one was on Pata- gonia Lake 6-11 Dec (D. Braddy), 2 were on Roosevelt Lake 13 Jan (TC et al.), one was on Saguaro Lake 17 Jan (TC, B. Burger), and 2 were on Bartlett Lake 21 Jan (B. Burger et al.). At Lake Havasu, the peak count of 14 Horned Grebes was found 9 Jan (DVP, LHa). Numbers at other sites were above average, with 23 re- ported 13 Dec–23 Feb; 9 on Apache Lake 10 Jan (TC et al.) made the highest count. As with Red-throated Loon, Red-necked Grebe has been annual only in recent winters. One con- tinued off Site 6, Lake Havasu through 10 Dec (m.ob.), and another was on Apache Lake 10 Jan (†TC). The Blue-footed Booby found dur- ing Oct at B.W.D. continued there through 15 Feb (m.ob.). The Brown Booby present at Lake Havasu City since Aug moved around the lake there through 15 Feb and was seen at B.W.D. 13 Feb (DVP, LHa). A very similar bird, with the same broken primary, was seen on Lake Mohave at Cottonwood Cove, NV 16 Feb+ (fde DVP). Greater Phoenix is the center of the Neotropic Cormorant population in Arizona; the census turned up a lower number than last year, with 1392 found 18 Jan (fde TC). Many pairs were present at Tres Rios, Phoenix, with courtship and nest building observed 15 Dec (TC, J. Jones). Along the L.C.R.V., the highest number noted was 7 at Parker Dam 4 Feb (J. Dunn, fde PEL), with smaller numbers scat- tered from Yuma to B.W.D. Around Tucson, Neotropics mostly depart in the fall and re- turn beginning in early Jan. The peak count there was 38 on 4 Feb (m.ob.). About half as many Double-crested Cormorants were found on the Phoenix census, with the 656 counted 18 Jan (fde TC) also down from last year. A were found during a survey of Roosevelt Lake 13 Jan (fde TC). Tundra Swan numbers were middling, with singles at Willow Lake 9 Dec+ (S. Burk), Granite Reef R.A. 12 Dec (L. Story), Jacques Marsh, Pinetop 25 Jan (ph. EH), and Cow Springs Lake 9-22 Feb (ph. L. Pilkington). As usual, most reports of Eurasian Wigeon came from greater Phoenix, with the outlier at Montezuma Well 3 Dec (CST); singles were at Arrowhead Ranch 23 Dec–26 Jan (D. Killou- rie; ph. L. Hoeniger), Granada Park 9 Jan (fde LH), Encanterra Country Club, San Tan Valley 18 Jan (EH), and Dos Lagos Park, Glendale 23 Jan–5 Mar (ph. J. Hopkins). The Phoenix census also turned up a new high count for American Wigeon of 19,700 on 18 Jan (fde TC). A Mexican Duck at the Baseline pond near Cibola 18 Dec (LHa, DVP) added to the small but growing number found in the L.C.R.V. A Blue-winged Teal was early at Upper Lake Mary 28 Feb (JWl). Recent winters (since the arrival of exotic mussels) have produced large numbers of Greater Scaup on the B.W.D.; this season's high count climbed to a record 518 present 22 Jan (LHa); at the same time, Lesser Scaup numbers were remarkably low there, around 30 (LHa). Surf Scoters continued at B.W.D. through 8 Dec, with a high count of 6 on 5 Dec (LHa), and 2 were in cen. Arizona at Saguaro Lake 17 Jan (TC, B. Burger). Two White-winged Sco- ters continued from fall at B.W.D., increasing to 5 by 31 Jan (DVP, LHa), with the last report 17 Feb (m.ob.). A remarkable 6 found at Lake Pleasant 12 Jan–13 Feb (ph. K. Radamaker) ap- parently represented a high count for the state. The Black Scoter found at Tucson during fall continued through 1 Jan (MMS). Two female Black Scoters were off Pittsburgh Point, Lake Havasu 1-12 Dec (ph. TD; †DVP; ph., †LHa). Long-tailed Ducks put in a good showing, with one at Page S.T.P. 2-3 Dec (ph. G. Nealon), one at G.R.P. 24 Dec (ph. D. Porter), 2 on Roosevelt Lake 13 Jan (ph. TC), and one at Rotary Park, Lake Havasu 1 Feb (ph. N. Williams). Gold- eneyes of both species have also fourished on Lake Havasu since the arrival of mussels. The peak counts at B.W.D. were 393 Commons 14 Jan (LHa) and 17 Barrow's 31 Jan (LHa, DVP). Conversely, the 2 Bar- row's Goldeneyes below Glen Canyon Dam 4 Jan (fde MMS) represented a low count for that C.B.C. The counts of 81 Hooded Mergansers and 1449 Common Mergansers on the Phoenix census 18 Jan (fde TC) were lower than in recent years and were attribut- ed to warm weather and a general de- crease in piscivores there. Red-breast- ed Mergansers were more numerous and widespread than usual away from Mark M. Stevenson Gary H. Rosenberg –––––––––––––––––––––––––––––––––––––– A nother warm and dry winter welcomed observers to the feld and semi-hardy species to linger in increased numbers. Flagstaff recorded its longest winter dry spell on record, and snowfall totals across north- ern Arizona were the ffteenth lowest on re- cord. Tucson recorded its warmest ever and ffteenth driest winter. After nearly 50 years of industrial (and birding) activity, Tucson's Roger Road Wastewater Reclamation Facility closed in early January 2014; waterfowl numbers in Pima County dropped substantially. A few spe- cies were on the move (e.g., Mountain Chicka- dee and Evening Grosbeak), but there were no large-scale irruptions. Rarity highlights in- cluded continuing boobies, White Ibis, Broad- winged Hawk, multiple rare gulls, Nutting's Flycatchers, and continuing Sinaloa Wrens. Abbreviations: A.B.C. (Arizona Bird Commit- tee), B.T.A. (Boyce Thompson Arboretum S.P.), B.W.D. (Bill Williams Delta, Lake Havasu), G.R.P. (Glendale recharge ponds), L.C.R.V. (lower Colorado River valley). WATERFOWL THROUGH GULLS Cackling Goose remains a scarce visitor to Ari- zona, with about a dozen reported this season: 2 at Lake Havasu City 4 Dec (ph. DVP), up to 3 at Cibola N.W.R. 18 Dec–17 Feb (LHa, DVP), up to 2 at Gilbert Water Ranch 27 Dec–20 Jan (ph. DS), one at Watson Lake 5-15 Jan (ph. M. Nicosia), one at Arrowhead Lake, Phoenix 17 Jan–4 Feb (ph. TD), and one at Glendale 24 Jan–4 Feb (ACo, ph. LH). The Greater Phoenix Waterbird Census tallied 4600 Canada Geese 18 Jan (fde TC), the largest number found in the brief history of that census. More than 500 Arizona Casual in Arizona during the winter, this Black-legged Kittiwake was at Tempe Town Lake 13 December 2013. Photograph by James McKay.

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