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J. Field Ornithol. 77(3):339344, 2006 DOI: 10.1111/j.1557-9263.2006.00064.x Nest box orientation affects internal temperature
 

Summary: J. Field Ornithol. 77(3):339­344, 2006 DOI: 10.1111/j.1557-9263.2006.00064.x
Nest box orientation affects internal temperature
and nest site selection by Tree Swallows
Daniel R. Ardia,1,3
Jonathan H. P´erez,2
and Ethan D. Clotfelter2
1
Program in Organismic and Evolutionary Biology, University of Massachusetts, Amherst, Massachusetts 01003, USA
2
Department of Biology, Amherst College, Amherst, Massachusetts 01003, USA
Received 23 January 2006; accepted 21 April 2006
ABSTRACT. Orientation of nests can influence nest microclimate, particularly temperature. However, few
investigators have examined orientation preference and microclimate simultaneously. We examined the possible
correlation between entrance orientation of artificial nest boxes used by Tree Swallows (Tachycineta bicolor) and
the internal temperature of boxes. Tree Swallows showed a preference for east- and south-facing boxes, but only
during the first half of the breeding season (before 1 June). During the second half of the breeding season (after
1 June), Swallows selected boxes based on availability. We found that east- and south-facing boxes were warmer
than north- and west-facing boxes, but only during the first half of the breeding season when those boxes were
preferred. Entrance orientation and box temperature were only correlated during the morning (06:00­12:00); the
temperature of all boxes was similar during the afternoon. Our results suggest that Tree Swallows show a preference

  

Source: Ardia, Dan - Department of Biology, Franklin and Marshall College

 

Collections: Biology and Medicine