Poorly Pigeons

Goodness, the pigeons that are around the station in the morning always seem to be in such rough shape. Bits of wings missing, and most commonly bits of feet/claws missing or mangled.

Spotted this fellow on platform 4 this morning and felt quite bad for him. His left foot was missing a claw and the two that were left were looking worse for wear. His right foot was basically gone and he was hopping around on a stump.

Is this pretty common for pigeons? I never really take much notice or am close enough to them to notice except for when we share train platforms.