brimstoneSalad wrote:There's no exact comparison between mammalian and avian ovulation and reproduction, since things work a little differently. I would consider the term "close enough" unless you have a better one.
An egg is not an embyro unless it is fertilized.
You are confused fertilization does not need to take place for a hen to have an egg.
Most egg's from hens are unfertilized that part doesn't matter.
What matters is if the egg is properly incubated to grow the chick, once the the shell of the egg is formed all the parts to start life are there to make the chick grow.
The egg yolk (embryo) of an egg has all the nutrients that the chick needs to grow inside the egg with out any help from mom all the egg needs to grow is to be properly incubated.
It's really the exact opposite of what mammals go through..
When a mammal has a baby they live inside the mother in the womb and get all the nutrients from mom everyday until they are born and once they are born they then get first the colostrum from their mother's tit for the first few feedings (varies with species and individuals) then after the colostrum is gone ( which provides the baby with all of the nutrients it needs ) the milk flow then comes in and the amount of milk the mother will make will depend exactly on how much the baby needs. The more the baby nurses the more milk producing hormones are stimulated...
Now mind you when mammals have children they lose their monthly periods because they are no longer producing egg's because that hormone production has stopped.
I guarantee you if you took the chicken coupe and nest away from rescue hen's and just let them run around free they wouldn't produce as many eggs as they would if they had a nest and coupe.(it's not like they can fly over fences or anything) The nest and coupe triggers the hen's hormones and says "All of my surroundings are in the right place it's time to have a baby" Their body's tell them when to have egg's ..
Google 'why my parrot laid an egg'
Human's and primate's are the only species that get 'menses' or a monthly flow every month we are the only animals that have our brains tell us when it is time to mate..
Actually during a woman's period is the time she is least hormonal the reason woman get PMS (emphasis on pre)
Woman start menses when they get their period and it last the entire month menses is more than just a period.
A woman is most hormonal 2 weeks before her period and that is because that is when she ovulates, or eggs are released into her ovaries.
Eggs are embryo's not periods, period.
Egg's are produced from hormones.
A period happens because a woman's egg wasn't fertilized, hen's make egg's too fertilized or not I guess you could say it is the same because everything inside the egg would be everything that would be inside the woman's womb and the egg is the womb so the egg could be compared to eating everything that is inside of the a human's womb and seeing as the uterus sheds every thing it prepared in it's womb for her egg each month because the egg hasn't been fertilized and the body is now making room for a new egg to develop..