Swallow-winged Puffbird (Chelidoptera tenebrosa) Science Article 1 abstract Recently Skutch (Wilson Bull., 60, 1948:81-97) published an important article on the life history of certain puff-birds in which the Swallow-wing (Ckelidopteru tenebrosa, family Bucconidae) is mentioned briefly. As this is a common bird in Surinam, Dutch Guiana, the following supplementary notes may be of interest. F. […]
NESTING BEHAVIOR OF THE SWALLOW-TAILEDHUMMINGBIRD, Eupetomena macroura(TROCHILIDae, AVES)
Swallow-tailed Hummingbird (Campylopterus macroura) Science Article 1 abstract An August or winter nestling of Eupetomena macroura was fed only every 40-50 min for at least 24days in the nest, with fewer feedings at midday. As in other hummingbirds, it was brooded only thefirst week or two, and left alone even on cool nights after 12 […]
Documented Winter Records of Swainson’s Thrush in U.S.A. and Canada
Swainsons Thrush (Catharus ustulatus) Science Article 4 abstract Part of the documentation for an ‘out-of-season’ bird may be its being banded by a reputable bander. Since banding data often contribute to patterns of change in bird distribution, it might be advantageous to leave unverified records in the Bird Banding Laboratory’s database with a code indicating […]
JUVENILE AND ADULT SURVIVAL OF SWAINSON’S THRUSH (CATHARUS USTULATUS) IN COASTAL CALIFORNIA: ANNUAL ESTIMATES USING CAPTURE-RECAPTURE ANALYSES
Swainsons Thrush (Catharus ustulatus) Science Article 1 abstract We estimated annual rates of survival for juvenile and adult Swainson’s Thrushes (Catharus ustulatus) using capture-recapture analyses from 22 years of mist-netting data in coastal California (n = 2,651 individual captures). Our apparent survival estimate was 56% for adults and 25% for juveniles. We are the first […]
THE IMPORTANCE OF PRODUCTIVITY TO THE DYNAMICS OF A SWAINSON’S THRUSH POPULATION
Swainsons Thrush (Catharus ustulatus) Science Article 3 abstract We analyzed the population dynamics of Swainson’s Thrushes (Catharus ustulutus) breeding at the Palomarin Field Station of the Point Reyes Bird Observatory using 15 yearsbreeding at the Palomarin Field Station of the Point Reyes Bird Observatory using 15 years (1980-1994) of long-term, standardized mist-net data. The capture […]
THE IMPORTANCE OF FRUIT TO SWAINSON’S THRUSHES, CATHARUS USTULATUS, DURING FALL MIGRATION: A FIELD TEST OF PLASMA METABOLITE ANALYSIS
Swainsons Thrush (Catharus ustulatus) Science Article 2 abstract I evaluated the hypothesis that fruit availability significantly influences stopoverhabitat quality for fall migrating Swainson’s Thrushes (Catharus ustulatus) in coastalnorthern California. I analyzed plasma metabolites (triglycerides,
Hurricane-Related Vagrancy of Swainson’s Thrush and Veery in Puerto Rico
Swainsons Thrush (Catharus ustulatus) Science Article 5 abstract Low pressure waves that contributed to the formation of Hurricane Wilma in the westernCaribbean produced westerly winds in the central Caribbean and Puerto Rico during the second week of October, 2005. On October 12 and for the following two weeks Swainson’s Thrush (Catharus ustulatus, six locations) and […]
Evidence for Wintering and Resident Populations of Swainson’s Flycatcher (Myiarchus Swainsoni) in Northern Suriname
Swainsons Flycatcher (Myiarchus swainsoni) Science Article 1 abstract Zimmer (1938: 408) was the first to demonstrate that the nominate subspecies of Swainsonss Flycatcher (Myiarchus s. swainsoni) of southeastern South America winters in northern South America. He based his demonstration upon specimens known to him from Guyana, Venezuela, and Colombia. Junge and Mees (1958: 106) later […]
Surf scoters Melanitta perspicillata aggregate in association with ephemerally abundant polychaetes
Surf Scoter (Melanitta perspicillata) Science Article 1 abstract […] During the week of 16-23 April 2003, we observed an unusually large aggregation of sea ducks and a Gray Whale Eschrichtius robustus foraging at Mapleguard Point, located in the southern portion of Baynes Sound, after which the site was abandoned. The flock consisted primarily of Surf […]
Notes on the distribution and natural history of the Sun Parakeet Aratinga solstitialis solstitialis.
Sun Parakeet (Aratinga solstitialis) Science Article 1 abstract Knowledge of Aratinga solstitialis is reviewed and found to be mostly antiquated. The bird’s known range, though possibly consisting of two populations, seems more restricted than previously thought with no specimens or published records unequivocally from Venezuela and French Guiana despite remarks of some previous authors. There […]