Hawk-eye: The birds of prey on pigeon patrol
Two stations in East Yorkshire have found themselves plagued by pigeons and their poo.
Enter Maverick and Zulu - two hawks who are now on patrol keeping the pesky pigeons at bay.
The two birds of prey are on a three month trial to see how effective they are, with train operator Northern saying they will be there to put off the pigeons and not to hunt them.
De-Graft has been finding out more.