Feather growth rate and hormone deposition vary with elevation but not reproductive costs in resident Mountain Chickadees
Benjamin R Sonnenberg,
Carrie L Branch,
Angela M Pitera
et al.
Abstract:Many organisms engage in metabolic trade-offs to manage costs associated with reproductive output which often leads to these costs carrying over into the future. Compensatory mechanisms vary across life-history strategies and are expected to result in near optimal fitness gains for the investor. Here we investigated whether environmental differences associated with increasing montane elevation and variation in reproductive output of a resident passerine songbird, the Mountain Chickadee (Poecile gambeli), were … Show more
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