Common Yellowthroat (Geothlypis trichas) Science Article 1 abstract Melanin-based ornaments often function as signals in male-male competition, whereas carotenoid-based ornaments appear to be important in female mate choice. This difference in function is thought to occur because carotenoid pigments are more costly to produce than melanins and are thus more reliable indicators of male quality. […]
Category: Parulidae
Male mask size is correlated with mating success in the commonyellowthroat
Common Yellowthroat (Geothlypis trichas) Science Article 2 abstract Many socially monogamous species have sexually dimorphic traits. The evolution of these traits is puzzling as sexual selection is often thought to be relatively weak in monogamous species KEVIN J. THUSIUS et al., ANIMAL BEHAVIOUR, 2001, 62, 435-446 Download article download full text (pdf)
Interspecific song learning in a wild Chestnut-sided Warbler.
Chestnut-sided Warbler (Dendroica pensylvanica) Science Article 2 abstract Vocal learning involving imitation is the prevalent mode of song development in songbirds. The evidence for vocal learning both from experimental studies and from local song variants shared among neighbors (dialects) indicates that songbirds generally learn from their own species, and that a genetically determined signal recognition […]
EXTRAPAIR PATERNITY INCREASES VARIABILITY INMALE REPRODUCTIVE SUCCESS IN THE CHESTNUT-SIDEDWARBLER (DENDROICA PENSYLVANICA), A SOCIALLYMONOGAMOUS SONGBIRD
Chestnut-sided Warbler (Dendroica pensylvanica) Science Article 1 abstract A monogamous mating system that includes extrapair fertilization can potentially generate higher variability in male reproductive success than monogamy without extrapair fertilization. That increased variability could provide a correspondingly higher opportunity for sexual selection and, thus, for the origin and persistence of sexual dimorphism in monogamous species. […]
DEMOGRAPHIC AND POPULATION RESPONSES OF CAPE MAYWARBLERS WINTERING IN MULTIPLE HABITATS
Cape May Warbler (Dendroica tigrina) Science Article 2 abstract Wintering Cape May Warblers (Dendroica tigrina) were studied in three habitats along an altitudinal gradient in the Dominican Republic. Results of this study are some of the first to link both population responses and individual condition of nonbreeding birds to prevailing ecological conditions across divergent habitats. […]
The Cape May Warbler (Dendroica tigrina) as an Abundant Autumnal Migrant and as a Destructive Grape Juice Consumer at Berwyn, Pa.
Cape May Warbler (Dendroica tigrina) Science Article 1 abstract For several years, previous to the crushing sleet of the past winter, a pie cherry tree crowned with the foliage of a fugitive Clinton grapevine overhung my shop platform; and a thirty foot pine bending under the weight of several Niagara grapevine runners, stood close to […]
ADDITIONAL RECORD OF THE BLACK-THROATED GREEN WARBLER IN PUERTO RICO, WITH SOME OBSERVATIONS ON FORAGING BEHAVIOR
Black-throated Green Warbler (Dendroica virens) Science Article 3 abstract The Black-throated Green Warbler (Dendroica virens) ranges from eastern Canada to Colombia,including the West Indies where it is uncommon and restricted to the Greater Antilles (Clements 1978, Faarborgh & Terborgh 1980). The species is considered a rare winter migrant to the islands, occurring from mid September […]
EXPERIMENTAL EVIDENCE FOR INTRINSIC MICROHABITAT PREFERENCES IN THE BLACK-THROATED GREEN WARBLER
Black-throated Green Warbler (Dendroica virens) Science Article 2 abstract Black-throated Green Warblers (Dendroica virens) use coniferous vegetation as foraging and perching substrates at coastal sites in Maine and predominantly deciduous vegetation at inland sites in interior New Hampshire, despite the availability of both substrates. I tested the hypothesis that these habitat use patterns result from […]
SPATIAL VARIATION IN FORAGING OF THE BLACK-THROATED GREEN WARBLER ALONG THE SHORELINE OF NORTHERN LAKE HURON
Black-throated Green Warbler (Dendroica virens) Science Article 1 abstract The Great Lakes strongly influence local climate, vegetation, and animal communities,all of which are important to both migrating and breeding birds. This influencecan be considerable during springtime in nearshore habitats, as onshore winds depress airtemperatures, delaying development of shoreline vegetation relative to inland areas. Thesedevelopmental differences […]
NONBREEDING HABITAT SELECTION AND FORAGING BEHAVIOR OF THE BLACK-THROATED GREEN WARBLERCOMPLEX IN SOUTHEASTERN MEXICO
Black-throated Green Warbler (Dendroica virens) Science Article 4 abstract We studied the ecological distribution and foraging behavior of three speciesin the Black-throated Green Warbler (Dendroica virens) species group in the Eastern Highlandsof Chiapas, Mexico. The three species, Black-throated Green, Hermit (D. occidentalis)and Townsend’s (D. townsendi) Warblers are largely allopatric on the breeding grounds andvariably sympatric […]