This is such a change of behavior for them. They have been trundling up and down the hill all summer and fall because the goslings couldn't fly. Now with the change in the weather and the winter solstice behind us, they are flying AND the males are starting to fight. That also involves a beating of wings and loud honking. The rest of the flock circles around and cheers on their favorites. It is a noisy, rowdy show. Sometimes other ganders will join in and 5 or 6 will be fighting at once. They tend to grab each others necks, flap their wings and try to push their opponent over or out of the way. The winner always stands up as tall as possible, flaps his wings to show how big and strong he is while honking loudly. When they are in the pond the ganders swim around with their tails in the air and a crook in their necks. It seems to me that they are starting to get ready for spring and are showing off already.
Note: This is an older picture--no snow and only a few geese at the upper end of the pond. It was my opinion at the time that LG was teaching our domestic geese to fly--now they all fly and all 42 of them make a considerable noise!