English: Canada Geese (Branta canadensis) in Great Meadows National Wildlife Refuge, near Concord, Massachusetts, USA. – This is the first in a series of geese in flight. They are the first pictures I've ever tried of birds on the wing, and as you will see some are more successful than others. Still, it's a start. – Flight is the process by which an object moves either through an atmosphere (especially the air) or beyond it (as in the case of spaceflight) by generating lift or propulsive thrust, or aerostatically using buoyancy, or by simple ballistic movement.