Canada goose

The canadian Geese come in great number during November and stay for a period of atleast 5 months. During this time they lay eggs and multiply and become very aggressive. They take over the nature reserve.
Pic #2 shows geese in the pond.
#3 shows the Dog Sweep which has been hired by the reserve to chase the Geese away without harming them. His companion Chance jumps in the water and tries to chase them away.
Picture 4 shows the battery operated speed boat [red in color] used to help the dogs in chasing the geese away.
The last picture shows the Geese flying off.
The reason being is that the reserve is trying to make the Geese nervous and discourage them from laying eggs and taking over for the next 5 months.