Handel, Colleen M.

28 items:

Use of buccal swabs for sampling DNA from nestling and adult birds Categories: Data, Publication; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: B5-Boreal Chickadee
Environmental contaminants and chromosomal damage associated with beak deformities in a resident North American passerine A large cluster of beak abnormalities among black-capped chickadees (Poecile atricapillus) in Alaska raised concern about underlying environmental factors in this region. Metals and trace elements, organochlorine pesticides, polychlorinated biphenyls (PCBs), and polychlorinated dibenzo-dioxins and polychlorinated dibenzofurans (PCDD-Fs) were analyzed in adults, nestlings, and eggs of the affected population; local bird seed was also tested for organochlorine pesticides. The results offered no support for the hypothesis that selenium or any other inorganic element was responsible for beak deformities among chickadees, but some evidence that organochlorine compounds may be contributing factors. Adults with beak deformities... Categories: Publication; Types: Citation; Tags: M1-Birds
Reviving common standards in point-count surveys for broad inference across studies Categories: Publication; Types: Citation; Tags: A1-Wildlife, M1-Birds
Reviving common standards in point-count surveys for broad inference across studies Categories: Publication; Types: Citation; Tags: Adaptation planning 1-Best Management Practices, Birds, Landscape Scale Conservation: Wildlife, Monitoring 1-Changes in Plant and Animal Distribution: Fauna
Estimation of Avian Population Sizes and Species Richness Across a Boreal Landscape in Alaska We studied the distribution of birds breeding within five ecological landforms in Yukon-Charley Rivers National Preserve, a 10,194-km^sup 2^ roadless conservation unit on the Alaska-Canada border in the boreal forest zone. Passerines dominated the avifauna numerically, comprising 97% of individuals surveyed but less than half of the 115 species recorded in the Preserve. We used distance-sampling and discrete-removal models to estimate detection probabilities, densities, and population sizes across the Preserve for 23 species of migrant passerines and five species of resident passerines. Yellow-rumped Warblers (Dendroica coronata) and Dark-eyed Juncos (Junco hyemalis) were the most abundant species, together accounting... Categories: Publication; Types: Citation; Tags: B5-Boreal Chickadee, M1-Birds, M1-Ecosystems

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