Differential habitat selection in boreal songbirds influences estimates of population size and distribution

Evidence for differential habitat selection among regions for six boreal songbird species across Canada

Project Summary

Understanding habitat selection across a species range is an important step in estimating population size and distribution. BAM has undertaken efforts to test for and quantify differential habitat selection (DHS) in birds among regions of the Canadian boreal forest. In 2018-19, we developed models to test for differential selection of forest compositional and structural attributes among three boreal forest regions for six landbird species. We found strong evidence for DHS among regions for all six species. Species distribution models that did not account for DHS overestimated density. This work was published in October 2019 as a manuscript in Diversity & Distributions (Crosby et al. 2019).

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Publications

Crosby, A.D., Bayne, E.M., Cumming, S.G., Schmiegelow, F.K.A., Dénes, F.V., Tremblay, J.A., 2019. Differential habitat selection in boreal songbirds influences estimates of population size and distribution. Divers Distrib 25, 1941–1953. https://doi.org/10.1111/ddi.12991