Survival and Growth of Northern Bobwhite Chicks in Western Oklahoma

Lusk, Jeffrey J., Guthery, Fred S., Cox, Scott A., Demaso, Stephen J., Peoples, Alan D., The American Midland Naturalist

ABSTRACT.-

Knowledge of chick ecology is essential for understanding and managing populations of northern bobwhites (Colinus virginianus). We report on chick survival and growth in western Oklahoma during 1997-2002. We used Cox proportional hazard models to estimate chick survival rate. Covariates included mass at time of capture, Julian day of capture and year. Chick mass was the only significant covariate in the model. Survival depended on time since capture because survival increased with chick mass, which concomitantly increased with time since hatch. Because of the dependence of survival on chick mass, we modeled chick growth as a function of age using a logistic model (r^sup …

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Publication information: Article title: Survival and Growth of Northern Bobwhite Chicks in Western Oklahoma. Contributors: Lusk, Jeffrey J. - Author, Guthery, Fred S. - Author, Cox, Scott A. - Author, Demaso, Stephen J. - Author, Peoples, Alan D. - Author. Journal title: The American Midland Naturalist. Volume: 153. Issue: 2 Publication date: April 2005. Page number: 389+. © 1995 University of Notre Dame, Department of Biological Sciences. Provided by ProQuest LLC. All Rights Reserved.

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