Black guillemots have been driven out of their long-time homes around Bangor harbour - by hooded crows.

BBC News reports that the crafty crows have been raiding nesting holes throughout the harbour, and have almost eliminated this year's brood of guillemots - affectionately known as 'black penguins'.

"Often there's been the odd egg or chick which has disappeared but this year it's been extraordinary,' said black guillemot expert Dr Julian Greenwood. "It's been a virtual wipe-out."

Dr Greenwood plans to thwart the crows next year by fixing small pieces of plywood across the openings of nesting holes, keeping the predators out.

BBC News has more on the story HERE.