A flock of canada geese flying in v-formation, starting in the distance and flying over the camera, with green background.

Keywords: 3-d 3d alpha alpha channel animated animation bird bird flock birds canada geese canada goose cg chroma chroma key compositing element flapping flight flock of birds flock of canada geese flock of geese flocking flocks flying formation geese goose green green background green screen group isolated key low angle matte migrate migrating migration nature overhead silhouette sky under underneath v v formation v-formation wings