On July 1st I saw Bobby swoop directly to the side of the building we were facing. It must have been the moment when he grabbed and killed a pigeon that was probably sitting on the ledge he darted at.
I lost sight of him but some of the other Pip watchers I was with saw him head into the tree you see him sitting in in this video.
He was panting hard. It must have been from all the intense activity from the kill. We soon saw him leave the tree and take refuge on a building wall to further deal with the kill.