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varied in size of fragment distance to forest edge
Observed and expected probabilities of a bobolink
Nest Predation and Brood Parasitism in Birds Nesting
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annual survival rates bobolink brood parasitism brown-headed cowbird clay-colored sparrow cowbirds data fairly Deviance Chi-square Distance sample occurring distance to forest expected probabilities fairly well Deviance fit our data forest edge fragment to edge growing seasons habitat quality habitat type hectares high quality habitat higher for sample juvenile survival large fragments last burned logistic regression model Minnesota nest occurrence nest predation nest productivity nest was significantly nesting success nuisance variables number of growing Number of Probabilities number of young Observed and expected occurrence was calculated occurring in sample P-value passerines Pope Counties Populus tremuloides prairie vegetation Predicted probability probability of nest probability of occurrence productivity of nests rate of brood rate of nest sample plots located sample unit savannah sparrow nest seasons since burn small fragments Small Large Large Small Small Large stable population successful nests tallgrass prairie units in sample units Observed Predict vegetation was last western meadowlark young fledged