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Re: Spinosaurs ate pterosaurs
Jaime Headden wrote:
Indeed. However, I will have to disagree. Yes, it does seem darn
inefficient that the food does not fall conveniently at one's feet, but to
catch it, one must leap _after_ it :). Darn cheetahs specializing in being
extremely inefficient hunters of only fast prey.
True, but gazelles do not fly. Thus, the the cheetah's pursuit of its
intended prey is limited to two dimensions: the chase begins on the ground,
and ends (one way or another) on the ground.
There are other hyper-specialized animals that
feed by enormous strain on their bodies, or by doing things that are
extraordinary by comparison to, say, salmon, as in the "spitting" fish.
In all these cases, the calorific content of the food item MUST justify the
expenditure of energy needed to acquire it. The archer fish has a highly
specialized method of bringing down insects, but I'm guessing spitting
doesn't require that much energy on the part of the fish. Sprinting after a
gazelle will exhaust the cheetah; but if successful, the pay-off for the
predator is enormous
My previous point was that AFAIK there are no animals that *specialize* in
snatching insects or birds out of the air, without the benefit of powered
flight. Certain animals (e.g., cats, the bane of native Aussie fauna) may
do this opportunistically, but none make a living out of it.
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