Swans sacrifice rest to squabble uniofexeter PLOSONE
, maintenance and resting—they found a"trade-off" between aggression and rest, meaning that"increased aggression is achieved at the expense of resting."
"These swans use aggression if there's competition over foraging areas," said Dr. Paul Rose, from the University of Exeter and WWT."Our findings show this this requires a trade-off, and that both species reduce resting time to allow for this aggression.
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