In Finland Barnacle goose (Branta leucopsis) have caused serious damage to dairy farms during last years specially in the eastern part of Finland. When the geese migrate during spring and autumn huge flocks with tens or hundreds of thousands of birds eat grass and also contaminate the grass fields with their excrement so that those fields cannot be used to silage production or pasture of cattle. Barnacle geese are protected, so they cannot be hunted or killed. Last year the Finnish government paid 3.4 million euros to compensate goose damage. From farmers point of view that was just a part of the economic losses. Big part of that money was used to compensate the damage for dairy farms.