منابع مشابه
Limited Geographic Variation in the Vocalizations of the Endangered Thick-billed Parrot: Implications for Conservation Strategies.
The populations of many species are declining worldwide, and conservation efforts struggle to keep pace with extinction rates. Conservation biologists commonly employ strategies such as translocation and reintroduction, which move individuals of endangered species from one part of their range to another. Because individuals from endangered populations are nonexpendable, identifying any potentia...
متن کاملReduced parental care, compensatory behaviour and reproductive costs of thick-billed murres equipped with data loggers
Theoretical models predict that in species with obligate biparental care, individuals will partially compensate for decreased parental effort by their partners as a stable evolutionary strategy. Full compensation may occur when breeding success is an accelerating function of parental effort, especially in long-lived bird species. We experimentally examined the effect of time-depth recorders (TD...
متن کاملWalrus (Odobenus rosmarus) predation on adult thick-billed murres (Uria lomvia) at Coats Island, Nunavut, Canada
Mallory et al. 2004: Polar Research 23(1), 111–114 The walrus (Odobenus rosmarus) is a circumpolar pinniped that has a varied diet. Evidence from numerous studies indicates that both Pacifi c walrus (O. r. divergens Illiger) and Atlantic wal rus (O. r. rosmarus Linneaus) are top predators in some trophic webs. While the majority of their diet consists of benthic invertebrates, particularly moll...
متن کاملAnimating the Ivory-billed Woodpecker
The proposed rediscovery of the Ivory-Billed Woodpecker by the Cornell Laboratory of Ornithology, while celebrated by some ornithologists, was debated by others. Central to the argument is the interpretation of a fuzzy video depicting a large black and white bird taking flight. This thesis describes the creation of a physiologically-accurate animation of a flying Ivory-Billed Woodpecker in hope...
متن کاملIngestion of plastic marine debris by Common and Thick-billed Murres in the northwestern Atlantic from 1985 to 2012.
Plastic ingestion by seabirds is a growing conservation issue, but there are few time series of plastic ingestion with large sample sizes for which one can assess temporal trends. Common and Thick-billed Murres (Uria aalge and U. lomvia) are pursuit-diving auks that are legally harvested in Newfoundland and Labrador, Canada. Here, we combined previously unpublished data on plastic ingestion (fr...
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ژورنال
عنوان ژورنال: The Auk
سال: 1906
ISSN: 0004-8038,1938-4254
DOI: 10.2307/4070430