Where is this? Don't know.
What exactly is going on? Doesn't matter.
All we do know about this video is that it's the cute video of the week. These geese are in a marching band.
The problem with having your sousaphone players march backwards is that if one goes down, they all go down. A fact clearly evidenced by this video of seven marching band players piling one on top of the other during a halftime show.