A team of biologists affiliated with several institutions in Britain and Ireland, has found that northern gannets exhibit a type of behavioral lateralization when plunge diving. In their study, reported in the journal Biology Letters, the group caught and tagged several specimens with accelerometers to learn more about their diving habits.
into the water, they first roll either to the left or right to improve their angle of descent, which allows them to move down through the water faster and deeper, providing a better chance of catching a fish.
The researchers note that the birds were especially active at the time of the study, as they conducted the experiment when the birds were feeding their chicks. That meant they had to hunt almost nonstop duringThe team collected data from 2,133 dives by 51 of the birds. Twenty-two of the birds preferred to roll right before diving, 23 rolled left and three had no preference.
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