Hatching asynchrony, brood reduction and feeding patterns in tree swallows (Iridoprocne bicolor).

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dc.contributor.author Bobrow, David M. en_US
dc.coverage.spatial UMBS Campus en_US
dc.coverage.spatial Pine Point - Douglas Lake en_US
dc.date.accessioned 2007-06-14T19:47:14Z
dc.date.available 2007-06-14T19:47:14Z
dc.date.issued 1982 en_US
dc.identifier.uri http://hdl.handle.net/2027.42/53486
dc.description.abstract A summary of Lack's (1954) brood reduction hypothesis for hatching asynchrony in birds is given. A recent objection to this hypothesis by Clark and Wilson (1981) is outlined. In an effort to better understand this controversy, the relationship between the degree of asynchrony and the frequency of brood reduction was explored using Tree Swallows (Iridoprocne bicolor). The results were inconclusive, probably because of the lack of food limitation during the season. Feeding patterns were also analyzed. It was observed that parents feed the nestling who's head is highest the majority of the time, but that often nestlings other than the highest are fed. Feedings were distributed to all different areas in the nest which is in sharp contrast to observations made in 1981. A feeding strategy based on behavioral changes with changing food availability is developed. en_US
dc.format.extent 1307779 bytes
dc.format.extent 3144 bytes
dc.format.mimetype application/pdf
dc.format.mimetype text/plain
dc.subject NETP en_US
dc.title Hatching asynchrony, brood reduction and feeding patterns in tree swallows (Iridoprocne bicolor). en_US
dc.type Working Paper en_US
dc.subject.hlbsecondlevel Natural Resource and Environment en_US
dc.subject.hlbtoplevel Science en_US
dc.contributor.affiliationum Biological Station, University of Michigan en_US
dc.contributor.affiliationumcampus Ann Arbor en_US
dc.description.bitstreamurl http://deepblue.lib.umich.edu/bitstream/2027.42/53486/1/1921.pdf en_US
dc.description.filedescription Description of 1921.pdf : Access restricted to on-site users at the U-M Biological Station. en_US
dc.owningcollname Biological Station, University of Michigan (UMBS)
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