If you’ve ever slaughtered a laying hen, you will see a production line of yolks coming out of their ovaries, getting progressively larger and larger as it gets closer toward the cloaca. So a chicken that lays an egg on one day will have a yolk that’s almost fully formed ready to get wrapped up with albumen and a shell the next day or two. Chickens need to eat pretty constantly all day to keep up with the resources it needs to do this. It really is a marvel, but we’ve bred them to do exactly this.
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