dagger]) One American redstart
infested with a single Amblyomma longirostre nymph.
In American Redstarts
(Setophaga ruticilla), food (arthropods) is most likely a limiting resource, and individuals compete over access to territories that will provide sufficient and consistent food levels for the duration of the non-breeding period (Marra 2000).
Red-bellied Woodpecker predation on nestling American Redstarts
males and females, for example, winter near each other on Jamaica (Studds and Marra 2005) but still had significant differences in timing of arrival.
Three species (Red-eyed Vireo, American Redstart
, Northern Waterthrush) were recaptured in sufficient numbers (fall only) to compare mass gain between islands.
trichas American Redstart
Setophaga ruticilla New World Sparrows Emberizidae Yellow-bellied Seedeater Sporophila nigricollis Greater Antillean Bullfinch Loxigilla violacea Grasshopper Sparrow Ammodramus savannarum Common name Spider sp.
Does cowbird parasitism increase predation risk to American Redstart
For example, at least two species of landbird migrants, Black-throated Green Warbler (Dendroica virens) and American Redstart
(Setophaga ruticilla) foraged and used habitats differently, depending upon whether individuals were observed in shoreline habitats containing abundant midges or inland where few midges were observed (Smith et al.
Models including only mean autumn temperature were the highest ranked for four species: American Redstart
(Setophaga ruticilla), Blue-winged Warbler (Vermivora cyanoptera), Veery (Catharus fuscescens), and Swamp Sparrow (Melospiza georgiana) (Tables 1, 2).
Return rates (13-29%) in our study were low for a neotropical migrant when compared to Prairie Warbler (Dendroica discolor) (50%) (Latta and Faaborg 2001), American Redstart
(Setophaga ruticilla) (40-70%) (Marra and Holmes 2001), and Northern Waterthrush (14-52%) (Reitsma et al.
Remsen and Robinson (1990) separated species that flush-chase prey, such as Hooded Warbler and American Redstart
(Setophaga ruticilla), into another foraging mode.
Other species observed resting on the ship included Louisiana Waterthrush (Parkesia motacilla), American Redstart
(Setophaga ruticilla), Tree Swallow (Tachycineta bicolor), and Barn Swallow (Hirundo rustica).
Eleven species were captured more frequently than expected on Appledore Island (Table 1): Red-eyed Vireo, Brown Creeper (fall, not tested in spring), Veery (fall but not spring), Swainson's Thrush (spring but not fall), Black-throated Blue Warbler, Black-and-white Warbler, American Redstart
(fall but not spring), Ovenbird, Northern Waterthrush, Mourning Warbler (spring but not fall), and Canada Warbler (spring but not fall).
However, American Redstart
, a species that forages and nests in shrubs and vines, appeared to be absent from treatment burn units during the first 2 years after fires.
and black-throated blue warblers pecked around in the undergrowth.