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Re: four winged Archaeopteryx
Ronald Orenstein wrote:
Well, it depends what you mean by "fully-developed", but the Kagu of New
Caledonia, which is all but flightless, has large, strongly-patterned wings
that are used in display.
By "all but flightless" I'm guessing you're referring to the fact that the
kagu is capable of gliding, such as during short descents. Useless for
take-offs or powered flight - which is why the kagu is threatened with
extinction due to predation by introduced mammals.