Rats swim over 300m to devour colony of seabirds

A colony of young Irish seabirds has been wiped out after rats swam into the middle of Dublin Port, climbed wooden poles, and devoured them.

Hundreds of young Common Terns were eaten alive by the rats in recent weeks in an attack that has shocked conservationists.

The rats would have had to swim more than 300m to reach the birds before scaling 10m-high wooden supports.