338 0 obj<>stream 0000205307 00000 n The North American Breeding Bird Survey, results and analysis 1966–2006. 0000214613 00000 n USDI, Fish and Wildlife Service, Fort Snelling, Minnesota, USA. Cerulean Warbler (Setophaga cerulea) populations have undergone significant declines over the past four decades, and the species is considered state endangered in Indiana. Forest vegetation structure was very similar between edge and interior, suggesting that differences in predator abundance and species richness were not driven by variation in habitat structure. dom_i.query(document).ready(function(){ basal area (m2/ha). 2002, McFaden and Capen 2002, Betts et al. Louisiana Pine Snake – Louisiana pine snake, a species of conservation concern, is associated with the longleaf pine forests of the West Gulf Coastal Plain. During the 10 to 11 day nestling period, both males and females fed the chicks equally. }) 0000002730 00000 n 0000204874 00000 n Together male and female Cerulean Warblers choose the nesting location. Generalizations about nest predators and edges should thus be made with caution, and conservation plans should consider the composition of local nest predator assemblages in order to predict potential impacts on nesting birds in edge habitat. State Forester These results support the structural-cues hypothesis for a species that forages in the structurally complex foliage of deciduous forests, and they are consistent with the food-value theory of territoriality. 0000205121 00000 n We con-clude that successful conservation of migratory species requires protection of habitats used during the postfledging period as well as those used during the nesting portion of the life cycle. 0000017144 00000 n Crop breeding involves assembling desired combinations of…, Jena researchers develop open-source optical toolbox. 2006. 251 152 0000003839 00000 n 0000220733 00000 n 3, September 2009, Small-scale biological phenomena in a male neotropical migrant songbird: space use, habitat use, and behavior within territories of male Cerulean Warblers. The number of African elephants is declining rapidly! An atlas of Cerulean Warbler populations. In winter, its home is the Andes, from Venezuela south to Bolivia. The cerulean warbler is a small songbird of the New World warbler family. The food value theory of territoriality predicts an inverse relationship between territory size and food density. 300 : dom_i.query(this).css("width").trim(); Increases in abundance and territory density were greater in stands with low pre harvest densities (<2 birds/point or <0.40 territory/ha) of Cerulean Warblers, whereas populations within stands with higher densities pre-harvest had minimal changes in abundance and territory density. April 1976 246 Gzo • gz T. Auszx • [Auk, Vol. 0000209462 00000 n %%EOF 0000201800 00000 n 0000226290 00000 n Características del Microhábitat y del Hábitat a Nivel de Paisaje de Dendroica cerulea en el Suroeste de Virginia Dendroica cerulea es una especie con un estado de conservación preocupante en el este de Norteamérica, donde se ha documentado una disminución de sus poblaciones durante las últimas décadas. We conducted surveys along 16 rivers in Missouri and Arkansas from 1999 to 2006 and related habitat and landscape factors to counts of Cerulean Warblers in 123 5-km segments on these rivers. Post-harvest abundance at harvest interior points was greater than at reference points and when accounting for years-post-harvest in modeling abundance, Cerulean Warbler abundance increased at harvest interior and reference points two years post-harvest and Although these results suggest shelterwood harvests containing abundant overstory trees can provide short-term breeding habitat for canopy songbirds, long-term responses of birds to partial harvesting may differ from those documented here depending on different management options employed. The Cerulean Warbler is a migratory songbird of eastern North America and has its densest breeding populations in the Appalachian Mountains Joint Venture (AMJV) region. 0000008132 00000 n All along its migratory path, the bird faces problems: habitat destructionon both breeding and wintering grounds, and nest parasites like Brown-headed Cowbirds in the fragmented forests that remain.

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