Egyptian Goose

In South Africa they gather in huge flocks and chill in the fields, especially the wheat fields. Some people think they are a pest and want to hunt them and cook them for lunch. I do not think they are a pest, but I am not sure. Don't they just come down here for a season then go back up again?

Thanks!

Egyptian Geese are usually found inland and close to water.
They range through the Nile Valley and deep into Africa south of the Equator. They can also be found in isolated regions along the east and south coasts of the Mediterranean Sea.