Aerial view of a large flock of bean goose taking up in the air, yellow agricultural field, sunny autumn day, autumn bird migration, low wide angle drone shot moving forward

field herd migration rucava swarm flock of birds flock crowding foraging whooper anser serrirostris wildlife drone panoramic nature nest crowded clear sky crowd aerial animal wild flight scenic aerial view autumn flying 4k abundance goose clear background flapping bird fly bottom natural behaviour below beak nica blue alert air wing bean feather