No hens do not lay unfertilised eggs as fertilisation in hens is internal. But when she lays eggs the zygote is very small in liquid form,so hen sits on egg in order to provide it full warmth and when chick develops after 3 weeks the egg shell burst opens.
No, it does not hurt a hen to lay an egg.
There is no difference. All eggs that go to your store are fertilized anyway, there's no way that a hen could or would lay an unfertilized egg.
A hen,a duck
No
Usually, a hen will lay an egg six months after it has hatched.
Yes, hens legs unfertilised eggs all the time.
It all depends on the hen herself.
no
Okay. To start off, you have a hen that will lay an egg about every 28 hours. If the hen has been with a rooster and the egg is fertilized, then the egg will hatch after some time. (I don't know the exact amount of time.) In other words, you DO NOT need a rooster to get an egg about every day.
It depends on whether there is a rooster around to fertilize the eggs. Broiler hens lay eggs that can grow into chicks just as typical egg-layers do - otherwise we wouldn't have broiler chicks to raise.
No, the egg is fertilized in the hen before the shell forms around it.
The hen, or the reptile. both lay eggs.