How does a hen lay eggs without mating?

You understand (I hope) that human women ovulate once (at least) every month, whether they are having sex or not, right? And that ovulation means ‘releasing an egg’ (which in humans is a tiny single cell)? A human egg cell is shed out along with the uterine lining, in a process called ‘menstruation’. UNLESS it is fertilized by ‘mating’, in which case it stays inside the woman’s uterus, and begins to replicate (or divide and grow).

Well chickens ovulate about every DAY, and they just drop that egg on the ground, or in a nest wherever they are. It is a big egg with a shell - but it is still just an unfertilized egg being released from a chicken’s ovaries, but chickens don’t HAVE a uterus, instead, they produce eggs out into the world, and if they have never met a rooster, those eggs are not fertilized, and will never become a chick.

If the hen mates with a rooster, however, her eggs may be fertilized, in which case she STILL drops that egg on the ground or in a nest, where she can sit on it for a month or so (I should look that up) while the yolk inside the shell - being fertlized - divides and grows into a chick, which eventually hatches.

Source: Quora

Basic biology.. parthenocarpy and parthenogenesis..have u ever sliced a melon and discovered it was seedless.its the same biology..some organisms can reproduce without ever having to meet with a male...

Hmmm God is great.