Colins mate

This isn't my little Colin. He was sat on the side with what looked like a very fat foot that he wasn't putting any weight on. I'm wondering if this one has had a go at him like it has a go at the little grebe. 
I shall miss hanging out with them most mornings as i have the dreaded return to work tomorrow,. Gosh that alarm is going to be painful after 6 weeks lol.