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Ecology and Behavior of Chickadees and Titmicean integrated approach$
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Ken A. Otter

Print publication date: 2007

Print ISBN-13: 9780198569992

Published to Oxford Scholarship Online: September 2007

DOI: 10.1093/acprof:oso/9780198569992.001.0001

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Winter adaptations in chickadees and titmice and the added effect of habitat fragmentation

Winter adaptations in chickadees and titmice and the added effect of habitat fragmentation

Chapter:
(p.263) CHAPTER 16 Winter adaptations in chickadees and titmice and the added effect of habitat fragmentation
Source:
Ecology and Behavior of Chickadees and Titmice
Author(s):

Jennifer R. Olson

Thomas C. Grubb

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198569992.003.0019

Many North American parids have ranges that expose them to temperate winter seasons. Chickadees and titmice possess several physiological and behavioural adaptations that allow them to manage the reduced food supply and high thermoregulatory demands of this environment. Yet, increased habitat fragmentation posed by agricultural and urban expansion also presents a further stress to these populations. This chapter reviews research on physiological adaptations to reduced temperatures, and then addresses how microclimate change induced by habitat fragmentation can affect the response potential of over-wintering birds. These evolved responses have been investigated in chickadees and tufted titmice in isolated woodlots in agricultural landscapes, where fragmentation and patch size greatly alter the microclimate to which species are exposed.

Keywords:   chickadees, titmice, urban expansion, temperate winters, habitat fragmentation, food caching, parids

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