Characteristics of Nest Mounds used by Snowy Owls in Barrow, Alaska, with Conservation and Management Implications

Ardea

Julie L. Petersen-Parret²  Mathew Seidensticker²  Mark Korti²  Kathy Gray¹  Denver W. Holt²  Michael T. Maples² 

[1] 2 Department of Mathematics and Statistics, California State University-Chico, Chico, California 95929, USA;1 Owl Research Institute, P.O. Box 39, Charlo, Montana 59824, USA

关键词: Management;   

DOI  :  

学科分类：动物科学

来源: Nederlandse Ornithologische Unie/Netherlands Ornithological Union

【 摘 要 】

SnowyOwlBuboscandiacusnestmoundsfromBarrow,Alaska,werecharacterizedmeasuringseveralvariablesfrom114nestsand2280randommounds.Moundheightappearedtobethemostimportanttrait,asnestmoundsaveragedabout1mtall,andweresignificantlydifferentfromrandommoundsinallyears.Generallycircularnestbowls(n=91)weredugbyfemalesandaveraged47.5×44.0×9.6cm(length×width×depth).MoundvegetationdidnotconcealIncubatingorbroodingSnowyOwls.Tallnestmoundswereadvantageousinthattheyweredrier(thinnersnowcoverwhichmeltedearlierallowingfemalestodignestbowls),windier(relieffrommosquitoesandcoolerinsummer)andallowednestingowlsgreatervigilanceagainstpredators.

【 授权许可】

Unknown