Image of bird at US-Mexico border wall wins contest

Mexican photographer Alejandro Prieto's image of a bird at the US-Mexico border wall has won a prestigious photo contest.

Mr Prieto was named the grand prize winner of the Bird Photographer of the Year competition after his image was selected from 22,000 entries.

His winning photograph depicts a roadrunner bird that has stopped in front of the wall.

He says the image highlights the threat to biodiversity that the wall poses.

The US-Mexico border region is a delicate ecosystem with regular animal and bird migrations moving north and south on the American continent.

In this region, a number of species need to cross the border to mate with their genetically different cousins, including the endangered North American jaguar and the black bear, which was re-introduced to Texas in the 1990s.