Geese weigh approximately 20 to 25 pounds and mate for life. The mating season for geese is between March and December, during which geese return to their original birth areas and build nests. During nesting season, geese typically travel in pairs. Geese lay up to 12 eggs, and the incubation period ranges from 20 to 30 days.
Baby geese are referred to as goslings. Goslings begin flying between two and three months of age. As baby geese mature in their nests, their mothers remain in close proximity and are known to attack humans if they believe their young are at risk.
The migration period for geese begins in October and lasts through March. Migratory geese are capable of flying up to 3,000 miles each season. Migratory geese fly in a V-shaped formation to minimize wind resistance and conserve energy. This formation also allows geese to remain in close proximity to one another during long journeys. Resident geese do not migrate; however, they do practice certain migration habits such as traveling north for mating season. Resident geese have a flight range between 100 and 200 miles, but they usually fly within a shorter radius. During migration season, resident geese hop from pond to pond and forage for food.