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Homeward bound: canopy cover and species identity influence non-breeding season homing success and speed in forest birds

摘要Background: Efficient and safe movement is fundamental for wild birds to thrive in their environments. For arboreal forest animals, especially birds, canopy cover has a large impact on birds' daily movements and is a crucial component of conservation strategies seeking to retain avian population in disturbed or urban habitats. Methods: We translocated woodland bird species utilizing different forest strata during two non-breeding seasons in Gainesville, FL, USA. We used linear model and generalized linear model to examine the effects of canopy cover and species identity on homing success and speed. Results: Among our study species of Tufted Titmouse (Baeolophus bicolor), Carolina Chickadee (Poecile carolinensis), and Northern Cardinal (Cardinalis cardinalis), we found that Carolina Chickadees and Tufted Titmice were more likely to return than Northern Cardinals. Among birds that successfully returned, homing speed is significantly affected by forest canopy cover and species identity (titmice had higher homing speed than cardinals). Birds return much faster in landscape with higher canopy cover. Conclusions: This study presented evidence of species identity's effect on homing success and speed in common feeder bird species in Southeast US and provided further evidence that bird movements in the suburban land cover are constrained by low canopy cover.

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作者 Jin Bai [1] Chelsea A.Weitekamp [2] Kelly Frye [1] Kathryn E.Sieving [1] 学术成果认领
作者单位 Wildlife Ecology and Conservation, University of Florida, Gainesville, FL, USA [1] Forest Resources and Conservation, University of Florida, Gainesville, FL, USA [2]
发布时间 2021-07-19
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鸟类学研究(英文版)

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