Sexing Chickens

So I'm watching "Dirty Jobs" on Discovery Channel where the dude is at a chicken hatchery. He just keeps saying the funniest things.

"I'm sexing chickens."
"We're just a couple of guys squeezing the crap out of chicks."
"This is a can full of poo. and the reason it's full of poo is because you're squeezing it [out of the chickens]."
"A dull flat look for the girls and a shiny hiney for the boys."
"Can't you see if there's a bump before you squeeze the poo out?"
"Chicken sexer.. it's a dirty job."