Snails once flew over Mexico (in the bellies of birds)

The Pacific and Atlantic horn snails were once the same species, until a land bridge blocked their path between oceans. But genetics suggest these snails still interbred long after they were cut off from each other. How? Thanks to the snail-eating birds. » 9/14/11 7:40am 9/14/11 7:40am

Pigeons are completely incapable of forgetting a human face

It turns out crows aren't the only birds with fiendishly powerful memories. Pigeons are also capable of spontaneously remembering which humans mistreated them, and even an attempt to disguise the identity of their one-time abuser can't fool them. » 7/04/11 11:00am 7/04/11 11:00am