Winter Wren (Troglodytes hiemalis) Science Article 1 abstract Hawthorn (1971) described a criterion for ageing many Wrens Troglodytes troglodytes based on the number of light
Effects of food supplementation on female nest attentiveness and incubation mate feeding in two sympatric wren species
Winter Wren (Troglodytes hiemalis) Science Article 2 abstract We examined effects of incubation mate feeding on female incubation behavior and correlates of fitness by providing female Bewick’s Wrens (Thryomanes bewickii) and House Wrens (Troglodytes aedon) with food supplements. Males of these species vary in their rates of feeding; Bewick’s Wrens feed their incubating mates frequently, […]
Evidence for cryptic northern refugiaamong high- and temperate-latitude species in Beringia
Winter Wren (Troglodytes hiemalis) Science Article 3 abstract Stewart and Dalen (2008) argue that only temperate species were locked incryptic northern refugia during Pleistocene glacial cycles, while species presently found athigh latitudes had much wider distributions during glaciations. Christin L. Pruett & Kevin Winker, Climatic Change, 2007 Download article download full text (pdf)
When black plus white equals gray: the nature of variation in the Variable Seedeater complex (Emberizinae: Sporophila)
Wing-barred Seedeater (Sporophila americana) Science Article 1 abstract The degree of relationship between the Variable (Sporophila aurita) and Wing-barred (S. americana) Seedeaters has been debated for over 80 years. The discovery of a zone of hybridization between the former and the Gray Seedeater (S. intermedia), not previously considered to be closely related because of its […]
A partly chestnut specimen of Variable Seedeater.
Wing-barred Seedeater (Sporophila americana) Science Article 2 abstract Navy pipeline near Gamboa, Panama Canal Zone, Horace Loftin and I collected an adult male Variable Seedeater (Sporophila aurita) with a considerable amount of chestnut in the plumage. There is a faint chestnut malar stripe and a narrow transverse band of chestnut across the throat. Storrs L. […]
SURVIVAL, PRODUCTIVITY, AND ABUNDANCE IN A WILSON’S WARBLER POPULATION
Wilsons Warbler (Wilsonia pusilla) Science Article 3 abstract We analyzed patterns in the abundance, productivity, and survivorship of a coastal California population of Wilson’s Warbler (Wilsonia pusilla) using capture-recapture data from 18 years of standardized mist-netting conducted during the breeding season. MARY K. CHASE et al, The Auk 114(3):354-366, 1997 Download article download full text […]
DIFFERENTIAL TIMING OF WILSON’S WARBLER MIGRATIONIN ALASKA
Wilsons Warbler (Wilsonia pusilla) Science Article 2 abstract We examined age- and sex-related differences in the timing of Wilson’s Warbler (Wilsoniapusilla pileolata) migration at four locations in Alaska: Fairbanks, Tok, Mother Goose Lake, and Yakutat. ANNA-MARIE BENSON et al, The Wilson Journal of Ornithology 118(4):547-551, 2006 Download article download full text (pdf)
The food demand in the nest of Wilson’s storm petrel
Wilsons Storm-petrel (Oceanites oceanicus) Science Article 3 abstract Energy delivered to the nests of Wilson’s storm petrel, Oceanites oceanicus(Kuhl, 1820), was evaluated by measurement of the oxygen consumption of brooding adultbirds and nestlings of different ages. Andrzej K. GEBCZYNSKI, Pol. Polar Res. 24 (2): 127-131, 2003 Download article download full text (pdf)
NIDIFICACION y HABITAT DEL PETREL DE WILSON (OCEANITES OCEANICUS) EN PUNTA CIERVA, COSTA DE DANCO, PENINSULA ANTARTICA
Wilsons Storm-petrel (Oceanites oceanicus) Science Article 1 abstract Studies on Wilson’s Storm-Petrel population at Cierva Point, Danco Coast, Antarctic Peninsula (64 09 S, 60 57 W), were done in the austral summer 1994-1995. The research was carried out in two areas, along the rocky coast and in the moss-covered hillsides. Jose Luis Orgeira, ORNITOLOGIA NEOTROPICAL […]
aeRODYNAMICS AND HYDRODYNAMICS OF THE ‘HOVERING’ FLIGHT OF WILSON’S STORM PETREL
Wilsons Storm-petrel (Oceanites oceanicus) Science Article 5 abstract Wilson’s storm petrel (Oceanites oceanicus) characteristically feeds by’ hovering’ over the water surface, but its technique for this is unlike that ofother flying vertebrates. The kinematics and aerodynamics of this ‘ hovering’flight were investigated to determine the possible sources of lift PHILIP C. WITHERS, J. exp. Biol. […]