Traits

Four fingered with a thumb, Membrane wings have rough, lizardlike pads on the ventral side of their wings, which they use to push off the ground when launching themselves into the air. 

Membrane wings with a feather covering. May grow a feather covering on the dorsal or ventral sides, for decoration or insulation.

Two fused fingers with a thumb, Feathered wings are covered entirely in flight feathers. Their skin does not extend to the tail.

Average Nocmyr wings, built like a bird of prey; optimized for speed, agility, and raw strength for lifting their heavy skeleton into the air

Long and narrow, adapted for soaring without flapping for long periods of time over long distances over water to conserve energy

Long and broad, capable of soaring without reliable wind currents

Short and wide, capable of fast and tightly controlled flight, and easy maneuverability through obstacles like trees

Smaller relative to body size, capable of sustained hovering, rapid wingbeats, and tightly controlled flight