Attraction to tropical mixed-species heron flocks: Proximate mechanism and consequences

  title={Attraction to tropical mixed-species heron flocks: Proximate mechanism and consequences},
  author={Gloria Sullivan Caldwell},
  journal={Behavioral Ecology and Sociobiology},
1. A series of experiments using flocks of model birds on natural foraging grounds in Panama was designed to test whether each species participating in mixed heron flocks was drawn to the flock by resources alone, by the presence of members of its own species, by the presence of other species, or by the white color of flock participants. 2. The presence of Snowy Egrets was determined to be the attractive force. Field observations revealed that herons of all participating species increased their… CONTINUE READING


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