American Redstart (Setophaga ruticilla) Science Article 4 abstract We examined American redstarts (Setophaga ruticilla) for protozoan blood parasites on their wintering grounds to determine whether transmission of these parasites occurs prior to spring migration. A total of 73 blood smears from 37 birds were examined for presence and intensity of infection. Thirty-six birds were sampled […]
Category: Parulidae
Delayed plumage maturation and thepresumed prealternate molt in american redstarts
American Redstart (Setophaga ruticilla) Science Article 5 abstract The American Redstart (Setophaga ruticilla) is one of about 30 sexuallydichromatic North American passerine species in which males exhibit adelayed plumage maturation (Rohwer et al. 1980). Males in their first winterand in their first potential breeding season are largely like females incoloration. SIEVERT ROHWER, WILLIAM P. KLEIN, […]
Fat stores of American redstarts Setophaga ruticilla arriving atnortherly breeding grounds
American Redstart (Setophaga ruticilla) Science Article 6 abstract Many long-distance passerine migrants arrive with more fat stores than necessary tohave reached their northerly breeding grounds. Researchers have argued for adaptiveadvantages associated with arriving with
Continent-wide variation in feather colour of a migratory songbird in relation to body condition and moulting locality
American Redstart (Setophaga ruticilla) Science Article 7 abstract Understanding the causes of variation in feather colour in free-living migratory birds has been challenging owing to our inability to track individuals during the moulting period when colours are acquired. Using stable-hydrogen isotopes to estimate moulting locality, we show that the carotenoid-based yellow
Age-specific differences in habitat selection by the American Redstart
American Redstart (Setophaga ruticilla) Science Article 8 abstract The American Redstart (Setophaga ruticilla) is unusual among parulids becausemales retain immature plumage until after the first breeding season. On the basisof this character, age-specific differences in habitat occupation have been reported(Ficken and Ficken 1967, Wilson Bull. 79: 188). In 1969 I sampled some redstarthabitats near Pellston, […]
Linking fluctuations in rainfall to nonbreeding season performance in a long-distance migratory bird, Setophaga ruticilla
American Redstart (Setophaga ruticilla) Science Article 1 abstract Research on long-distance migratory birds has yielded some of the strongest evidence that shifts in climate are changing ecosystem processes. Much of this work has focused on understanding whether rising temperatures on temperate breeding grounds are advancing migration phenology and limiting reproductive success. However, conditions on tropical […]
Modeling Seasonal Interactions in the Population Dynamics of Migratory Birds
American Redstart (Setophaga ruticilla) Science Article 2 abstract UNDERSTANDING THE POPULATION DYNAMICS of migratory birds requires understanding the relevant biological events that occur during breeding, migratory, and overwintering periods. The few available population models for passerine birds focus on breeding-season events, disregard or oversimplify events during nonbreeding periods, and ignore interactions that occur between periods […]
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)
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 […]
Prothonotary Warbler Nest Success and VegetationCharacteristics in a Fragmented Oklahoma Landscape
Prothonotary Warbler (Protonotaria citrea) Science Article 2 abstract In 2003, I studied the relationship between prothonotary warbler (Protonotaria citrea)nest success and vegetation characteristics in a fragmented Oklahoma landscape. Fortynest boxes were monitored for reproductive success and vegetation characteristics weremeasured at nest boxes and 40 random points within the same stands. Thirty-five successfulnests fledged a mean […]