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Bats fly better than birds
Topic Started: Nov 25 2011, 08:23 AM (1,981 Views)
JohnFaa
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http://www.livescience.com/1245-bats-efficient-flyers-birds.html

And pterosaurs flied better than bats.

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Rick Raptor
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Then shouldn´t bats eventually outcompete similar birds (e.g. nightjars)?
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trex841
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or...had outcompeted them already? what's keeping them?
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Nanotyranus
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Probably because most of them have a good niche already, and birds hold their niches already, making it easier to stay in their respective niches.
Or maybe it's due to something completely unrelated, like live birth vs. eggs.
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Russwallac
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Bats haven't been around as long as birds; they've been slowly replacing birds whenever a niche opens, though. They've already grabbed most of the nocturnal niches, and are just now starting on the diurnal ones (fruit bats, for instance).
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trex841
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ah, so it's a slow takeover.
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JohnFaa
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Russwallac
Nov 25 2011, 12:39 PM
Bats haven't been around as long as birds; they've been slowly replacing birds whenever a niche opens, though. They've already grabbed most of the nocturnal niches, and are just now starting on the diurnal ones (fruit bats, for instance).
This.

When bats evolved, birds were already dominant, and thus could not expand into new niches. Since the Eocene, they've been expanding, and I would not be surprised if they took over once an extinction event decimated several bird clades.
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Spugpow
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It said they compared a hummingbird to a similar-sized bat. It seems to me that hummingbirds exert a lot more control over their flight than bats, which probably requires more energy (which they can afford because of their high calorie diet). The comparison seems dubious.

Also, birds have far more efficient respiratory systems than bats.
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Kamineigh
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Peregrine Flacons say bats ain't got sheeit.
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Spugpow
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Also, how is it that birds beat out pterosaurs?
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Kamineigh
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They didn't. They filled different niches. This is common knowledge.
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JohnFaa
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Spugpow
Nov 25 2011, 03:43 PM
Also, how is it that birds beat out pterosaurs?
They didn't, as I'm fucking tired of explaining. Pterosaurs suffered due to the Turonian extinction events that also decimated 80% of the marine reptile taxa and several dinosaurs like brachiosaurs, and even then birds never took advantage, as azhdarchids quickly recovered, and so did ornithocheiroids and possibly anurognathids.

Indeed, no flying bird in the Mesozoic was above the size of a hawk.
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Nanotyranus
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Pterosaurs are THAT AWESOME.
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JohnFaa
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Indeed, to deny their awesomeness is not heresy, is reality denial.
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Kamineigh
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You know, until someone goes back in time and wipes them out a hundred million years too early.

TEEHEE.
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I have no fear of losing my life - if I have to save a koala or a crocodile or a kangaroo or a snake, mate, I will save it.

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The Writing on the Wall
 
You should not have come here.
This is not a place of honor. No great deed is commemorated here. Nothing of value is here.
What is here is dangerous and repulsive.

Parasky | 2015
 
You can't be 100% certain Barack Obama is currently the US president, or that the nation of Canada even exists.
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