Birds wing it in many ways

Their movement, not shape, determines flight behaviour.

Some of the wings from Vancouver’s Beaty Biodiversity Museum used in the study: (top to bottom) gyrfalcon (Falco rusticolis), American kestrel (Falco sparverius), belted kingfisher (Megaceryle alcyon), red-tailed hawk (Buteo jamaicensis), red-crested turaco (Tauraco erythrolophus) and bar-headed goose (Anser indicus). Markers indicate the location of joints or other features of the skeleton. Credit: Vikram B. Baliga