If we told you there was a species of parrot in the world that can’t fly, would you believe us? We couldn’t believe it ...

Not all avians fly, though; ostriches, at nine feet tall, and emus are notable flightless birds, despite having wings. Examples of other avians. Ducks are birds. Therefore they are avians and not ...

It can fly, but it's regarded as "nearly flightless." It primarily toddles around on the ground, but it does extend its wings and flips up its trademark "mohawk" crest for mating displays.

And the nearly seven-foot-tall, ... Flightless birds, however, are another story. At least two factors have allowed dinosaurs, including birds, to evolve to a wide range of sizes.

Takahe is a flightless bird of nearly 50 centimetres in size, has been an intrinsic part of New Zealand's ecosystem since the prehistoric Pleistocene era, as evidenced by fossil remains, ...

The mostly flightless, meat-eating dinosaur descendents were the size of dogs at their smallest, but the largest known examples reached nearly 10 feet in height.

Fossils found in New Zealand highlight an era after the dinosaurs when giant flightless birds prowled ... One species is a beefy behemoth that waddled along the New Zealand coastline nearly 60 ...