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- W4292775006 abstract "Abstract Collective behaviours are widely assumed to confuse predators, but empirical support for a confusion effect is often lacking, and its importance must depend on the predator’s targeting mechanism. Here we show that Swainson’s Hawks Buteo swainsoni and other raptors attacking swarming Mexican Free-tailed Bats Tadarida brasiliensis steer by turning towards a fixed point in space within the swarm, rather than by using closed-loop pursuit of any one individual. Any prey with which the predator is on a collision course will appear to remain on a constant bearing, so target selection emerges naturally from the geometry of a collision. Our results show how predators can simplify the demands on their sensory system by decoupling steering from target acquisition when capturing prey from a dense swarm. We anticipate that the same tactic will be used against flocks and schools across a wide range of taxa, in which case a confusion effect is paradoxically more likely to occur in attacks on sparse groups, for which steering and target acquisition cannot be decoupled." @default.
- W4292775006 created "2022-08-23" @default.
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- W4292775006 date "2022-08-23" @default.
- W4292775006 modified "2023-10-18" @default.
- W4292775006 title "Raptors avoid the confusion effect by targeting fixed points in dense aerial prey aggregations" @default.
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- W4292775006 doi "https://doi.org/10.1038/s41467-022-32354-5" @default.
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