Do birds have menstrual cycles and periods ?

You're absolutely right moggie! Birds, as a matter of fact, do NOT have periods. Don't you hate it when people give false information and lie about their qualifications.

Do mammals have periods?

No, not all mammals menstruate, most of them don't. They have an estrous cycle. It is similar and easily mistaken for a period but it's not the same thing.

I saw, on another answer, a "professional vet" saying that birds DO have periods. It's sad how people PRETEND to be vets, thinking it's some game or something. Grrrr.

It is also horrible how innocent clueless people are choosing the WRONG advice just because it is given by some 'vet'.

The kangaroos supplies of embryos that lay dormant. One embryo gets into production at a time and once the joey has left, the next embryo is triggered to swing into reproduction and so forth. When the joey is suckling it sends signals tells the mother kangaroo to stop the production.

I know as a fact, that moggie is a well respected person in the Y!A bird field. BUT, sometimes our answers get overruled by some false information given by fake 'vets'. For goodness sakes, I saw an answer where a 13 year old claimed to be a 'vet'. I thought "Darling! Get back to school! Do your homework! Get off Y!A! "

People claiming to be vets giving down right dangerous advise is just HORRIBLE. Just because they are doing it online does not mean it is right, heck, by means its even more cowardly and WRONG than lying in person!

Yeah, you just answered your question & maybe you should take a closer look at the idiots who tell people the wrong information rather than the people who've been informed of the wrong information. When you're just learning & naive you take anything on board. Education is the key!

As for the roos. They have a supply of embryos that lay dormant. One embryo swings into production at a time. Once the joey has left the pouch, died, or whatever the next embryo is triggered to swing into reproduction. When the joey is suckling it sends off signals that temporarily cease reproduction. They can have 3 embryo's & joeys in 1 year. So there's a little more to it than just storing & favourable conditions.

Sorry...you brought it up first :)))

Its not just the bird section you see this kind of thing in, it is all the pet sections (and I'm sure many other areas of YA too) "Expert trainers" giving the worst possible advise, people claiming to be vets and vet techs giving down right dangerous advise, "cat experts" telling people their grey bi-color moggie is defiantly a purebred Russian Blue they are 100% sure etc, "expert aquariumists" telling people its fine to keep an Oscar in a 10 gal tank, fish don't outgrow the tank they are in etc.

The sad thing is the truly inexperienced owners or would be owners believe them because they claim to be experts.

Do Birds Have Periods

I think it is the most ridiculous thing I've ever heard people say. But the sad thing is they sell it as the truth. This can be so dangerous if someone sees blood coming from their birds vent and mistake it for a 'period'.

So many dead birds can come of this information, and people need to pull their head in and keep quiet if they don't know the answer.

Even sarcastic answers are better than wrong ones.

since you already answered your own question, I'm curious about how they reproduce. This is the first time I think about it truly and since I have birds as well, I suspected once that they can control when to become fertile. do you know if that is true?

if they don't have cycles (and they don't), they must have other means to start the process of mating right? any known facts?

NO!!!!!!!!!!!!!!!!!!!!!! Only human ladies menstruate! ESTRUS is the distinct reverse of menstruation! "Having blood pop out" is ***NOT*** the definition of menstruation.

You just answer your own question ?_?