Dolphin underwater bait-balling behaviors in relation to group and prey ball sizes.

@article{VaughnHirshorn2013DolphinUB,
  title={Dolphin underwater bait-balling behaviors in relation to group and prey ball sizes.},
  author={Robin L Vaughn-Hirshorn and Elisa Muzi and Jessica L Richardson and Gabriella J Fox and Lauren N Hansen and Alyce M Salley and Kathleen Maria Dudzinski and Bernd W{\"u}rsig},
  journal={Behavioural processes},
  year={2013},
  volume={98},
  pages={1-8}
}
We characterized dusky dolphin (Lagenorhynchus obscurus) feeding behaviors recorded on underwater video, and related behaviors to variation in prey ball sizes, dolphin group sizes, and study site (Argentina versus New Zealand, NZ). Herding behaviors most often involved dolphins swimming around the side or under prey balls, but dolphins in Argentina more often swam under prey balls (48% of passes) than did dolphins in NZ (34% of passes). This result may have been due to differences in group… CONTINUE READING
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