Wildfowl (c) BBC
Media playback is unsupported on your device
Video

Why ducks and geese eat toxic lead

About 100,000 wetland birds are killed every year from poisoning by discarded lead ammunition, say scientists.

This is one of the conclusions of a report published on Thursday by the University of Oxford.

Here, Debbie Pain and Ruth Cromie, who were involved in the research, explain some of the key findings.

Video journalist: Victoria Gill

  • 26 Nov 2015