Parakeet Auklet (aethia psittacula) Science Article 1 abstract We are not aware of any published accounts of the behavior of the Parakeet Auklet. Previous studies of this species have centered on its ecology in the Bering Sea (Bedard 1969a, 1969b, Sealy 1968, Sealy and Bedard 1973). Our intent is to discuss and relate the basic […]
Category: Alcidae
HABITAT SPECIFIC BEHAVIOR OF THE PARAKEETAUKLET IN THE BARREN ISLANDS, ALASKA
Parakeet Auklet (aethia psittacula) Science Article 1 abstract We are not aware of any published accounts of the behavior of the Parakeet Auklet. Previous studies of this species have centered on its ecology in the Bering Sea (Bedard 1969a, 1969b, Sealy 1968, Sealy and Bedard 1973). Our intent is to discuss and relate the basic […]
Comparative foraging ecology of planktivorous auklets in relation to ocean physics and prey availability
Parakeet Auklet (aethia psittacula) Science Article 2 abstract tested the hypothesis that the spatial distributions of foraging least, crested and parakeet auklets (aethia pusilla, A. cristatella and A. psittacula, respectively) in the shallow passes of the Aleutian Islands would be determined by physical mechanisms that control near-surface prey concentrations. We recorded currents using an Acoustic […]
Sex differences in Little Auk Alle alle parental care: transition from biparental to paternal-only care
Little Auk (Alle alle) Science Article 1 abstract Understanding differences in male and female care in biparental care systems can help interpret the selective pressures that shape parental strategies. We examined Little Auk Alle alle parental care at a breeding colony during the chick-rearing and fledging periods by conducting observations on marked, known-sex pairs, and […]
CHICK DIET AND DAILY ACTIVITY PATTERN OFCOMMON MURRES AND BLACK-LEGGED KITTIWAKESAT BLUFF SEABIRD COLONY,NORTON SOUND, ALASKA
Guillemot (Uria aalge) Science Article 8 abstract At Bluff seabird colony, Norton Sound, Alaska, Common Murres(Uria aalge) fed their chicks with mostly blennies in the afternoon. Parents ofBlack-legged Kittiwakes (Rissa tridactyla) shifted chick guarding duties at any timeof day. Foraging trip time of the murres at Bluff (3.6 hr) was about 1.4-3.3 timeslonger than other […]
Wear of rings used on Guillemots Uria aalge: caution in the estimation of survival rates
Guillemot (Uria aalge) Science Article 1 abstract When ashore, a Guillemot Uria aalge usually walks with the tarsus in contact with the ground and this results in severe wear of rings. Even the change from soft to hard metal rings in the early 1960s only increased the useful life of a ring placed on a […]
Adult survival and avian cholera in Common Guillemots Uria aalge in the Baltic Sea
Guillemot (Uria aalge) Science Article 2 abstract Common Guillemots Uria aalge are long-lived seabirds with a low annual reproductive output; hence annual adult survival is a significant parameter for the sustainability of the population (Harris & Birkhead 1985, Hudson 1985). Oiling, bycatches, and large-scale oceanographic and foodweb changes are commonly considered to be potential major […]
Population status of the Common Murre Uria aalge in British Columbia
Guillemot (Uria aalge) Science Article 6 abstract The Common Murre Uria aalge is one of the most abundant breeding seabirds in the northern hemisphere (Ainley et al. 2002). The species has a rather disjointed breeding distribution along the Pacific coast of North America: hundreds of thousands of individuals breed on colonies in Oregon and northern […]
Distribution of Murres outside the Breeding Season
Guillemot (Uria aalge) Science Article 3 abstract The main purpose of this document is to propose a coordinated international banding plan for Thick-billed Murres and Common Murres. Banding is an essential tool for describing with mapping the winter distribution of different murre populations, identifying overlapping distributions, determining the timing of migration, and ascertaining impacts of […]
Competition for breeding sites and site-dependent population regulation in a highly colonial seabird, the common guillemot Uria aalge
Guillemot (Uria aalge) Science Article 7 abstract The hypothesis of site-dependent population regulation predicts that birds utilize available nesting sites in a pre-emptive (ideal despotic) manner, leading to density dependence in heterogeneous habitats as poorer sites are used at higher population densities. At small population sizes adaptive site choice protects populations against fluctuations (the buffer […]