Yeppers...it's a hen thing.
I have one hen missing a large chunk of comb (nest fight) and have seen one hen lay an egg ON TOP of another hen already in the nest and another time, the hen was taking her head and shoving it under the other hens butt trying to kick her out of the nest. When we built the larger coop, we built two community nests, so when they fight over the nest, there is plenty of room to share. No bloody combs in a year!

