Brain size in birds is related to traffic accidents

Chaffinch by Tony Wood. Linford Lakes NR. 8 June 2016

Chaffinch by Tony Wood. Linford Lakes NR. 8 June 2016

Estimates suggest that perhaps a quarter of a billion birds are killed by traffic annually across the world. This is surprising because birds have been shown to learn speed limits.

Birds have also been shown to adapt to the direction of traffic and lane use, and this apparently results in reduced risks of fatal traffic accidents. Such behavioural differences suggest that individual birds that are not killed in traffic should have larger brains for their body size.

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