A few years back when I had bantams, when I let them out in the morning I'd throw the corn down outside for them a few minutes later I heard this weird screeching and a bantam hen and crow were rolling over locked together, when I got there the crow had nearly ripped the top half of the beak off the bantam, I tried super glue but it didn't work long term, they crow continued to come for feed so I thought I'd better dispose of it, It was pretty grey in feathering and obviously quite old, I felt a bit guilty as it was only going for the easy option, a bit like myself and I don't doubt the bantam hen was the pushy one as they are quite feisty