What ARE birds?

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What ARE birds?
RE: What ARE birds?
Quote:mysticetes are birds
After review, mysticetes are not birds, sorry for any unintended confusion

Most if not all monodontidae, ziphiidae and porpoises are not birds
It is difficult to say if the physeteridae &/or kogiidae are/were all birds or not but Physeter macrocephalus is definitely not a bird
Tytonidae (and by extension, Tyto) are not birds
Some strigidae are birds
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RE: What ARE birds?
Are Delphinapterus birds?
Are beluga whales birds?

Were Denebola birds?
Were Bohaskaia birds?

Are Monodon monoceros birds?
Are narwhals birds?

Were Haborophocoena birds?
Is the finless porpoise a bird?
Is the narrow-ridged finless porpoise a bird?
Were Numataphocoena birds?

Is the harbor porpoise a bird?
Is the vaquita a bird?
Is the spectacled porpoise a bird?
Is Burmeister's porpoise a bird?
Is Dall's porpoise a bird?

Were S. bosselaersii birds?
Were Piscolithax birds?
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RE: What ARE birds?
Is the dumpster behind the outback steakhouse a bird?
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RE: What ARE birds?
Ok, I'm going to just jump over most of that and just state that othodoncetes are not birds - but it is difficult to say when they stopped being birds precisely
Also I just found a study that suggests mysticetes are in fact birds all along and my original instincts were right

mysticetes birds, othodoncetes not birds yes good let's move on

Quote:Is the dumpster behind the outback steakhouse a bird?
there may be birds and not birds inside the dumpster behind that infernal place but the dumpster itself is not a bird
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RE: What ARE birds?
if it helps, out of those listed, the narwhals are the easiest to define as not birds
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RE: What ARE birds?
Are walruses whales?
Are snails birds?
Are warthogs birds?
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RE: What ARE birds?
walruses are birds
snails are not birds (already asked)
warthogs are birds
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RE: What ARE birds?
are polar bears birds?
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RE: What ARE birds?
Polar bears are birds
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RE: What ARE birds?
Birds have exposed mineralization only on / inside their eating apparatus.
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RE: What ARE birds?
Birds do not have exposed mineralization only on / inside their eating apparatus
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RE: What ARE birds?
Is it ok for a hint? Is birdness based on a physical attribute?
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RE: What ARE birds?
(04-24-2019, 11:50 PM)Schazer Wrote: »Is it ok for a hint? Is birdness based on a physical attribute?
it sure sounds like it could be
Quote:you have to look carefully to notice
it might be more useful to think about not birds than birds
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RE: What ARE birds?
Is a barn owl with the horns of the horned owl a bird?
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RE: What ARE birds?
A barn owl is not a bird, with or without such 'horns'
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RE: What ARE birds?
are frogs birds?
Are whistling tree frogs birds?
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RE: What ARE birds?
frogs are birds
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