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Extinct bird comes back from the dead


Eldorado
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Wonder why flightlessness is desirable then, as an evolutional eventuality in both cases.

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That's really fascinating stuff. I wonder if environmental change had something to do with it?

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21 hours ago, Not A Rockstar said:

Wonder why flightlessness is desirable then, as an evolutional eventuality in both cases.

My guess? I'd say that it has a lot to do with energy economy. Flight takes a lot of energy. If the bird can successfully find food and mates without having to fly, the ability to fly goes away.

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On 5/9/2019 at 8:35 PM, Not A Rockstar said:

Wonder why flightlessness is desirable then, as an evolutional eventuality in both cases.

Maybe it's more of a case of it becoming less undesirable. To the point that it becomes survivable.

The absence of predators allows those born flightless to survive to reproduce.

Eventually, it makes no difference whether you can fly or not and you don't try - for energy reasons as stated.

Harte

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