Pied-billed Grebe Predation on a Common Yellowthroat
نویسندگان
چکیده
منابع مشابه
Density and Abundance of Secretive Marsh Birds in Iowa
A decrease in wetland habitats throughout North America has caused a decline in populations of marsh birds. The objective of this study was to estimate population densities and abundances of secretive marsh birds in Iowa. Call-broadcast surveys were conducted in conjunction with distance sampling for eight species of marsh birds at wetlands in three regions of Iowa during 2009 and 2010. Regions...
متن کاملPopulation ecology and monitoring of secretive marsh-birds in Iowa
Populations of marsh-birds are believed to be declining throughout North America in response to a decrease in wetland habitats. As a result, several species of marshbirds are of heightened conservation status at the local and regional levels and the need to monitor populations of these birds is critical to effective conservation and management. Our objective was to estimate population densities...
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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 کاملExtensive MHC class II B gene duplication in a passerine, the common Yellowthroat (Geothlypis trichas).
The major histocompatibility complex (MHC) is characterized by a birth and death model of evolution involving gene duplication, diversification, loss of function, and deletion. As a result, gene number varies across taxa. Birds have between one and 7 confirmed MHC class II B genes, and the greatest diversity appears to occur in passerines. We used multiple primer sets on both genomic DNA (gDNA)...
متن کاملLong-lasting mobbing of the pied flycatcher increases the risk of nest predation
Mobbing behavior may provide real benefits because mobbing prey individuals often cause a predator to leave the vicinity. However, mobbing calls of prey can attract acoustically oriented predators thus increasing nest predation. Therefore, a real value of mobbing as a type of adaptive behavior may depend on its duration. In this experimental study, we tested whether mobbing duration by the pied...
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ژورنال
عنوان ژورنال: Western Birds
سال: 2017
ISSN: 0045-3897
DOI: 10.21199/wb48.1.4