| Rebecca Safran (Cornell Ph.D. candidate) is interested in the tremendous amount of variation in group size that is characteristic of most socially breeding organisms. She is studying solitary and group breeding Barn Swallows in Tompkins County, New York to determine whether individual-level decisions about mate and habitat selection predict patterns of group size variation. Because extra-pair matings are an important part of the Barn Swallow's mating system, she is examining differences in the social and genetic mate-selection decisions of female Barn Swallows and how these choices vary with group size.
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This juvenile Barn Swallow was photographed at 15,000 ft in the Andes
of northern Argentina after migrating from a nest site in
North America. |
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