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 284 typically winter in large numbers in that area, we predict that we may see a long-term shift of their wintering grounds into our Region. In fact, some species that may have been high- lighted as rare just a few years ago are now too numerous to mention ("puddle" ducks such as American Wigeon, Northern Pin- tail, Northern Shoveler, for example). The same does not hold, however, for sea and bay ducks, which are rare (Red- breasted Merganser) or un- reported (Surf Scoter, Buffe- head, Common Merganser), or whose status has remained relatively static (Lesser Scaup) in the Region. On the other hand, the increase in number of species of gulls is more likely a combination of the increasing ability of ob- servers to recognize and pick out these species from the expected gulls (e.g., California Gull and Western Gull) and a continuing global expansion of some species (e.g., Lesser Black- backed Gull, Kelp Gull), which may or may not be linked to climate change. Notable frsts this past winter were the frst verifed report of Waved Albatross in North America, a bird found offshore in Costa Rica, and the frst report of Western Gull in Cen- tral America, also from Costa Rica. Costa Rica also recorded its frst, and possibly second, Inca Tern. Gadwall was fnally recorded in Guatemala. White-faced Ibis, California Gull, and Kelp Gull were all new to Honduras, as was a hybrid Eurasian Wigeon x American Wigeon—especially noteworthy because Eur- asian Wigeon has not yet been recorded in Central America. Kelp Gull was recorded for the second and third time in Costa Rica and California Gull for the second and third time in Nicaragua. Southern Lapwing was recorded for the second time in Honduras and Black- legged Kittiwake for the second, and appar- H. Lee Jones Oliver Komar –––––––––––––––––––––––––––––––––––––– T he signifcant increase in both numbers and species of waterfowl in the Region the past few winters has been mirror- ing the droughts plaguing the southwestern United States and northern Mexico, a phe- nomenon that has been attributed to long- term climate change. As these wetland species ently third, time in Costa Rica. And fnally, Unspotted Saw-whet Owl was documented in Panama for the frst time in nearly forty years. DUCKS THROUGH SHEARWATERS Two pairs of Gadwall at Finca AA Private Natural Reserve, Petén 27 Feb (RC, JBo) pro- vided the long-expected frst record for Gua- temala. Three interesting duck hybrids were reported in the Region this winter. A male Eurasian Wigeon x American Wigeon hy- brid was found at Lake Yojoa, Cortés 9 Feb (RJ, ph. JvD). Although frequently reported from the United States, this is the frst time this hybrid combination has been reported from Central America. Ironically, Eurasian Wigeon has never been reported from the Re- gion. There were two reports of Cinnamon Teal x Blue-winged Teal hybrids, both males: one in Honduras at Lake Yojoa 9 Feb (RJ, ph. JvD), a location where pure Cinnamon Teal has not been reported yet, and one in Belize at Fresh Catch Fish Farm, Belize 13 Feb (ph. JU). Until recent winters, Cinnamon Teal was considered exceptionally rare in most of the Region, but several visited the Region again this winter. In Nicaragua, 2 were observed at Salinas Grandes, León 7 Dec (MBi). The last eBird records of this species in Nicaragua are from 2002. In Costa Rica, a male was at Las Concavas, Cartago 8 Dec (CS); a male and female were at Hacienda El Palenque, near Liberia, Guanacaste (ph. JZ, HR, IL); and at least one male was at Sandillal Reservoir Ca- ñas, Guanacaste 5 Feb (JZ), with 2 males there 16 Feb (L&PA). In El Salvador, 4 Northern Pintails reported 24 Dec (ph. OK, JA, MB) in Laguna de Chanmico were the frst for La Libertad. Still unexpected in the Region, alt - hough nearly annual now in in many areas, a female Green-winged Teal was at El Jicarito, Honduras 27 Dec (ph. OK). One seen 24 Dec at Laguna de Chanmico, was not only the frst for La Libertad (ph. OK, MB, JA) but only the eighth for El Salvador. In Costa Rica, singles were at Las Cóncavas, Cartago 8 Dec (CS) and Sandillal Reservoir 5 Feb (JZ). A pair of Ring-necked Ducks observed 24 Dec at Laguna de Chanmico (ph. OK, JA, MB) provided only the fourth record for El Salva- dor. This species was also reported 6 & 22 Jan (2 and 8, respectively) from Laguna Nauala- pa, La Paz (ph. SH) where it was previously detected in 2012. The southernmost report of Ring-necked Duck this season came from Lagunas de Volcán in Panama, where one was found 4 Feb+ (TA, RS, BW, DWa); the same observers found 3 there the next day. At Lake Apanas, Jinotega, 2 Ruddy Ducks were seen 24 Feb (JH), while at Las Playitas in the Moyua- Las Playitas–Tecomapa Ramsar site, Matagal- Central America Ring-necked Duck is now an expected sight in winter on lagoons, ponds, and reservoirs in much of Central America, with numbers occasionally approaching 100 individuals in Belize; however, this pair at Laguna de Chanmico 24 Decem- ber 2014 provided only the fourth record for El Salvador. Photograph by Oliver Komar. This male Blue-winged Teal x Cinnamon Teal found at Fresh Catch Fish Farm in central Belize 13 February 2014 was the second such hybrid to be reported in Belize. Photograph by Jonathan Urbina.

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