Bird wing
Videos
Bird wings are paired forelimbs in birds, which evolved specialized feathers to generate lift and thrust and allow the birds to fly.
The mute swan with outstretched wings
The short and rounded (elliptical) wings of the blue jay are adequate for short flights in densely-vegetated habitats.
A roseate tern uses its long wings (low wing loading and high aspect ratio) to fly economically for long periods of time.
The wings, as those on this black vulture (broad wings with noticeable primaries) are used to soar for long distances to find food: carrion
Moa
Videos
Moa are an extinct group of flightless birds formerly endemic to New Zealand. During the Late Pleistocene-Holocene, there were nine species, in six genera. The two largest species, Dinornis robustus a
Bird wing
…specialized feathers to generate lift and thrust and allow the birds to fly. Terrestrial flightless birds have reduced wings or none at all (for example, moa). In aquatic flightless birds (penguins), wings can serve as flippers. Like most other tetrapods, the forelimb of birds consists of the shoulder (with…
Dinornis maximus, Natural History Museum
Neck tissue of Emeus crassus
Holotype head and neck of Megalapteryx
Soft tissue attached of several moa