Willet (Catoptrophorus semipalmatus) Science Article 3 abstract The Willet is a familiar shorebird to many birders around temperate regions of North, Central, and South America. Its large size, drab plumage, and flashy wing pattern make it relatively straightforward to identify Michael O’Brien, BIRDING MAY/JUNE 2 0 0 6 Download article download full text (pdf)
Female Site Fidelity And Polygyny In The Blackpoll Warbler (Dendroica Striata)
White-faced Whitestart (Myioborus albifacies) Science Article 3 abstract From 1980 to 1982, 8-30% of male Blackpoll Warblers (Dendroics atriata) studied on Kent Island, New Brunswick, were bigamous each year (2 = 16.8%). I tested whether differences in the quality of the breeding situation can give rise to polygynous matings. Five territory parameters and two male […]
transoceanic migration of the blackpoll warbler:summary of scientific evidence and response tocriticisms by murray
White-faced Whitestart (Myioborus albifacies) Science Article 2 abstract The hypothesis that Blackpoll Warblers (Dendroica striata) make transoceanicflights in autumn from the northeastern U.S. and southeastern Canada to South Americahas been proposed or supported in more than 25 papers by many authors, using manytechniques.M urray (1989; unpubl.) has criticized this hypothesis, but cited only a few […]
Autumn stopover ecology of the BlackpollWarbler (Dendroica striata) in thorn scrub forestof the Dominican Republic
White-faced Whitestart (Myioborus albifacies) Science Article 1 abstract We used mist-netting, color-banding, resighting, and behavioral observations to study the autumn stopoverecology of migrating Blackpoll Warblers (Dendroica striata) in coastal thorn scrub forest in the area of Cabo Rojo,Pedernales Province, Dominican Republic. Blackpoll Warblers were the most abundant migrant present in this habitatthroughout most of October […]
Demography and Ecology of Montane ForestBird Populations in the Green Mountains of Vermont
White-faced Whitestart (Myioborus albifacies) Science Article 4 abstract Bicknell’s Thrush (BITH) and Blackpoll Warbler (Dendroicastriata; BLPW) were selected as focal study species because: 1) Bicknell’s Thrush is restricted to montaneforests and Blackpoll Warbler is a near-obligate resident of this habitat in the Northeast Kent P. McFarland, Christopher C. Rimmer and James E. Goetz, Vermont Monitoring […]
The occurrence of fault bars in the plumage of nestling Ospreys.
Western Osprey (Pandion haliaetus) Science Article 3 abstract We document the occurrence of fault bars in a population of nestling Ospreys Pandion haliaetus under natural conditions. Ospreys had an average of 9.9 fault bars on their rectrices, however variation was large. Fault bar formation declined linearly with age and increased symmetrically from outer to inner […]
Courtship Feeding And Osprey Reproduction
Western Osprey (Pandion haliaetus) Science Article 1 abstract A female Osprey (Pandion haliaetus) usually is fed exclusively by its mate between pair formation and egg-laying. Laying dates and courtship periods, but not clutch size, egg size, breeding success or female weight reserves, were correlated (negatively) with the prelaying feeding rates of 12 females breeding in […]
Energetic expenditure of male Ospreys provisioning natural and manipulated broods.
Western Osprey (Pandion haliaetus) Science Article 2 abstract This study examined the relationship between brood size and energetic expenditure of male Ospreys. The daily energetic expenditure (DEE) of male Ospreys, provisioning nestlings and providing post-fledging parental care, was estimated using detailed time-energy budgets. Factors affecting DEE were investigated, and DEE and the maximum rate of […]
Nesting Records Of Five Antbird Species From The Colombian Amazon
Warbling Antbird (Hypocnemis cantator) Science Article abstract Few nests of Amazonian antbirds (Thamnophilidae and Formicariidae) have been described. Here we present nesting records for five species of antbirds found in Tinigua National Park, Colombia. A pouchshaped pensile nest of the Warbling Antbird (Hypocnemis cantator) in a treefall gap within seasonally flooded forest contained two eggs […]
Species Limits In Antbirds (Thamnophilidae): The Warbling Antbird (Hypocnemis Cantator) Complex
Warbling Antbird (Hypocnemis cantator) Science Article 1 abstract Recordings examined. The following list identifies recordings used in the study by taxon, country, state or department, recording location, and recordist. Taxon codes reflect the names of current subspecies within whose range they fall. Numbers following the recordist name identify the number of cuts per recordist per […]