We got a hen (said it was 2 yrs old) and she's got 1" claws on the side of her legs (I trimmed them when she started attacking my young 'uns). What are these called and can the size of these claws help tell her real age?? My 17 1/2 wk olds don't have anything on their legs - except I'm noticing little bumbs where I think they will grow. Are these like "du-claws" on a dog? Do they need to be removed? Thanks!