julesreubin wrote:
By what evolutionary mechanism do migrating birds (e.g. Canada geese) end up at the same spot for overwintering year after year? Their ability to do this has always amazed me - we need maps and satnavs, they have neither of those.
Birds use a cluster of mechanisms, some of them quite mundane, like landmarks. Different species do it slightly differently. I'm not sure if Canada Geese have been tested specifically.
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