During bird migration periods, waders swarm around the open mires in Patvinsuo. Spring and autumn are the best seasons for a birdwatching trip to the Teretinniemi birdwatching tower or the Surkansuo birdwatching platform. Patvinsuo is the ideal place for spotting swans, cranes, geese and many species of mire and water birds, gamefowl and birds of prey.