Category: North America

parental feeding of nestling yellow warblers in relation to brood size and prey availability

Yellow Warbler (Dendroica petechia) Science Article 12 abstract The feeding by adult Yellow Warblers (Dendroicap etechia) of nestlings in broods of 3, 4, or 5 young was studied during two breeding seasons on the forested dune ridge near Delta, Manitoba. Broods of 2-day-old young were selectively fed geometrid larvae by the adults, and broods of […]

YELLOW WARBLER

Yellow Warbler (Dendroica petechia) Science Article 8 abstract Across its vast range, the Yellow Warbler is a highly variable species. Forty-threesubspecies are currently recognized, and are treated geographically as three groups. The aestivagroup breeds throughout much of the U.S. and Canada, from northern Alaska, northern Yukon,northwestern and central Mackenzie, northern Saskatchewan, northern Manitoba, northernOntario, central […]

Interspecific Aggression By Yellow Warblers In A Sun Coffee Plantation

Yellow Warbler (Dendroica petechia) Science Article 5 abstract Non-breeding habitat use is mediated infrequently by interspecific aggression in migratory birds. Such aggression occurs most commonly among birds exploiting rich resource patches such as nectar, fruit, or other similar resources (Greenberg et al. 1994). Interspecificterritoriality and dominance is less commonly noted among insectivorous species (Rappole and […]

Speciation and rapid phenotypic differentiation in theyellow-rumped warblerDendroica coronatacomplex

Yellow Warbler (Dendroica petechia) Science Article 7 abstract The relative importance of the Pleistocene glacial cycles in driving avian speciationremains controversial, partly because species limits in many groups remain poorly understood,and because current taxonomic designations are often based on phenotypic characteristicsof uncertain phylogenetic significance. We use mtDNA sequence data to examinepatterns of genetic variation, sequence […]

Do female Yellow Warblers (Dendroica petechia) incubatewhile in the nest during the laying period?

Yellow Warbler (Dendroica petechia) Science Article 2 abstract Although some passerine species heat their eggs during the brief periods of nest attentiveness early in the laying period (e.g., Haftorn 1981), egg temperature data are not available for Yellow Warblers (Dendroica petechia). As part of a larger study on the effect of Brown-headed Cowbird (Molothrus ater) […]

Male plumage, paternal care and reproductive success in yellow warblers,Dendroica petechia

Yellow Warbler (Dendroica petechia) Science Article 13 abstract Using morphological or behavioural features correlated with paternal care, females can, priorto mating, assess the potential parental contribution of males. As a first step in a study of female matechoice in yellow warblers, this study was designed to examine the importance of paternal care by malesof diVering […]

Breeding habitat use by sympatric and allopatric populations of Wilson’s Warblers and Yellow Warblers

Yellow Warbler (Dendroica petechia) Science Article 15 abstract We studied Wilson’s Warbler (Wilsonia pusilla) and Yellow Warbler (Dendroica petechia) habitat use in allopatric and sympatric populations in the Rocky Mountains of northern Colorado and southeastern Wyoming in order to better understand the different habitat needs and interactions of these two species. Janet M. Ruth and […]

yellow warbler (dendroica petechia) breeding biology and parasitism by the shiny cowbird (molothrus bonariensis) inboqueron, puerto rico

Yellow Warbler (Dendroica petechia) Science Article 6 abstract Aspects of the breeding biology of the Yellow Warbler (Dendroica petechia) and ShinyCowbird (Molothrus bonariensis) parasitism were studied in Boqueron, Puerto Rico from 2001 to 2002.Fifty-seven percent (n = 12) of warbler nests were parasitized. Survival of parasitized nests was lowerthan non-parasitized nests. Thirty-four percent of nests […]

Adoption of yellow warbler nestlings by song sparrows

Yellow Warbler (Dendroica petechia) Science Article 3 abstract Although interspecific brood adoption has been reported in several species of birds, theprocess by which it occurs has seldom been reported. We observed a pair of Song Sparrows (Melospiza melodia) that adopted a brood of Yellow Warblers (Dendroica petechia) and, gradually, over several days, took over the […]

Subspecific Identification of the Willet Catoptrophorus semipalmatus

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)