منابع مشابه
Occurrence of twin embryos in the eastern bluebird
We report the first record of presumed twinning in eastern bluebird (Sialia sialis) and provide a review of previously reported twinning events in wild birds. A nest containing twin eastern bluebird nestlings was monitored in 2013 in central Pennsylvania and reported to the Cornell Lab of Ornithology's NestWatch program, a national program where volunteers submit data on wild nesting birds. A p...
متن کاملGenetic rescue to the rescue.
Genetic rescue can increase the fitness of small, imperiled populations via immigration. A suite of studies from the past decade highlights the value of genetic rescue in increasing population fitness. Nonetheless, genetic rescue has not been widely applied to conserve many of the threatened populations that it could benefit. In this review, we highlight recent studies of genetic rescue and pla...
متن کاملA Natural Occurrence of Foster Parenting by a Female Mountain Bluebird
In recent years, much attention has been devoted to the question of altruism in birds (e.g. Trivets 1971; Power 1975, 1981; Pinkowski 1978a; Pierotti 1980; Ligon 1983). In a study of potential altruism in Mountain Bluebirds (Sialia currucoides) in Montana, Power (1975) found that after removal of 13 female "consorts," 2 were subsequently replaced, with 1 of these females helping the male raise ...
متن کاملMountain rescue
Last month the Australian Alps were awarded National Heritage status in recognition of the outstanding natural and cultural significance of Australia’s most spectacular mountain range. The heritage listing applies to a group of national parks that encompass the High Country in Victoria, the Snowy Mountains in New South Wales, and the Brindabella Ranges in the Australian Capital Territory and to...
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ژورنال
عنوان ژورنال: Blue Jay
سال: 1994
ISSN: 2562-5667,0006-5099
DOI: 10.29173/bluejay5236