Zoologists from across Europe are joining forces to save wild tigers in Siberia after an exceptionally severe winter.

The tigers -- an endangered species -- have been driven out of forests by the lack of wild game and have been roaming villages and attacking pets and livestock in search of food.

Several European zoos have answered an appeal for crates to move stray tigers away from areas where they have been in conflict with humans.

Only about four hundred tigers are thought to be left in the wild in Siberia.

From the newsroom of the BBC World Service