Tag: all of Uria

Distribution of Murres outside the Breeding Season

Thick-billed Murre (Uria lomvia) Science Article 1 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 […]

Thick-billed Murres Uria lomvia replace mates during breeding

Thick-billed Murre (Uria lomvia) Science Article 2 abstract Among most seabirds, including murres Uria spp., the breeding pair take turns incubating the eggs and feeding and brooding the nestlings (Lack 1968, Gaston 2004). This collaboration is usually critical to the rearing of the chick. Consequently, the death or disablement of one parent during breeding may […]

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 […]

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 […]

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 […]

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 […]

Long-term study of mortality in thecommon guillemot in the Baltic Sea

Guillemot (Uria aalge) Science Article 4 abstract This study is based on a uniquely large and long-term data set ofringed common guillemots (Uria aalge) in the Baltic Sea. We analysedrecoveries of 42,824 common guillemots ringed in Sweden from1912-1998. Most of the birds were juveniles ringed on the island ofStora Karlso in the southern Baltic proper. […]