Nest defense by Carolina Wrens

  title={Nest defense by Carolina Wrens},
  author={Kelly A. D'Orazio and Diane L. H. Neudorf},
Abstract We examined nest defense behavior of the Carolina Wren (Thryothorus ludovicianus) in response to avian intruders at the nest. Freeze-dried mounts of a brood parasite (female Brown-headed Cowbird [Molothrus ater]), nest predator (Blue Jay [Cyanocitta cristata]), and a control (Swainson's Thrush [Catharus ustulatus]) were presented at wren nests to examine if wrens were able to distinguish among these threats. The primary nest defense behavior of Carolina Wrens was alarm calls. Wrens… 

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