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Bird breeding systems
Topic Started: Mar 20 2009, 07:30 PM (1,268 Views)
Oneistheloneliestnumber
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EPITOME OF AWESOME.

Most birds reproduce the way humans do (most of us should know what this is like already :P).

Breeding systems:
Birds are either:

Monogamous: having one mate usually, but sometimes switching and finding a new mate. About 90% of the species are monogamous. Examples include cockatiels, swans and penguins.

Polygyny: having more than one female. Examples include grouse and bowerbirds.

Polyandry: having more than one male. Only 1% of the species are polyandrous. Examples include jacanas and the spotted sandpiper.

Polygamy: both sexes having multiple mates, see above.

Polygynandry: not much is known about this breeding system, see Wikipedia.

Promiscuity or extra-pair copulations: nature's form of "cheating", though most species of birds are monogamous, they may do this if their mate fails to breed.
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Stokesosaurus

Interesting - I didn't know there was any distinction between polygamy/polygyny/polygyandry etc.

Quote:
 
Polygynandry: not much is known about this breeding system, see Wikipedia.
Do you know how amny speacies use this, whatever it is?
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Oneistheloneliestnumber
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I have no idea...

Quote:
 
Polygynandry occurs when two or more males have an exclusive relationship with two or more females. The numbers of males and females need not be equal, and in vertebrate species studied so far, the number of males is usually lower.
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Stokesosaurus

Eh? That's an unusual system. I wonder how many birds use it?
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Oneistheloneliestnumber
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Probably birds that live in large groups.
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Stokesosaurus

Maybe.

It's been a while since you've done one of these now. What do you think the next one will be about?
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Oneistheloneliestnumber
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I have no idea.

BTW: I found out birds can be homosexual.
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Stokesosaurus

Can they, now?! I knew other animals like pigs could be, but I didn't know birds could!
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Oneistheloneliestnumber
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Yeah, and the list is pretty long too.

List here: http://en.wikipedia.org/wiki/List_of_birds_displaying_homosexual_behavior
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Stokesosaurus

Wow - it's certainly longer than I expected.

I see you get homosexual insects too :o !
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Oneistheloneliestnumber
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I know, that's odd!
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Stokesosaurus

I wonder how homosexuality came to be around in so many species in the first place?
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Oneistheloneliestnumber
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I have no idea, it's usually the social species that are.
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Stokesosaurus

OK, then.

I miss these. Do you plan to write any more?
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Oneistheloneliestnumber
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I dunno

there ain't anything to write bout
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Stokesosaurus

:S Why do you say that? I thought you knew a lot about birds...
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Oneistheloneliestnumber
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I'm really not interested in them anymore
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Stokesosaurus

Oh? I thought they were your favourite animals :S ?
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Oneistheloneliestnumber
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I'm more into medicine
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Stokesosaurus

Oh, OK then. Maybe you could teach us about that instead?
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Oneistheloneliestnumber
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I'm not really good at that yet

besides, where do I start? :S
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Stokesosaurus

Maybe the kidneys, since they fascinate you?
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Oneistheloneliestnumber
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Well nephrology and urology are my favourite subfields along with haematology, gastroenterology and reproduction (dunno the name for that).

Are you sure you're interested in urine like I am?
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Stokesosaurus

Well, I wouldn't mind learning a bit more about it.
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Oneistheloneliestnumber
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I find it very fascinating

we urinate because we cannot store waste in our bodies

I hope someday someone will find something to combat that.
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Stokesosaurus

OK...what would be the point in storing waste in our bodies, though :S ?
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Oneistheloneliestnumber
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I have no idea
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Stokesosaurus

OK...why do you want somebody to combat it, then :S ?
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Oneistheloneliestnumber
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Find a better way to get rid of waste
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Stokesosaurus

Oh, OK. What's wrong with urinating?
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