Steroid Hormone Levels Are Related to Choice of Colony Size in Cliff Swallows

@inproceedings{BrownSteroidHL,
  title={Steroid Hormone Levels Are Related to Choice of Colony Size in Cliff Swallows},
  author={Charles R Brown and Mary Brown and Samrrah A. Raouf and Linda C. Smith and John C Wingfield}
}
One hypothesis to explain the extensive variation in colony size seen in most taxa is that individuals sort themselves among groups based on phenotypic characteristics that correlate with their performance in groups of different sizes. We investigated how baseline levels of the steroid hormones, corticosterone and testosterone, were associated with choice of colony size and the likelihood of moving to a different site in later years in colonially nesting Cliff Swallows (Petrochelidon pyrrhonota… CONTINUE READING