Funnily enough, I saw something really sad, pigeon related in Kent.
Two of the horrible little gits were stotting along the Medway bank in tonbridge as I was enjoying an evening pint in a beer garden.
One of them, let's assume it was the male, slipped and fell in the river. He surfaced, and tried to climb, soaked, back out onto the muddy bank. Of course, he could not, despite frantic attempts while the female looked concerned and helpless. He then spent ten horrible minutes getting weaker and weaker, and eventually slipped under the water and drifted downstream. The female looked stricken and walked along beside him for a bit before disappearing.
I'm no friend of pigeons, but it was horrible to see.
PS they were on the other side of the river and there was no way I could help him.