Gewann See is a good place to see European Bee-eater hunting insects in the air in the summer. (They breed nearby in the Kaiserstuhl). Inhabitants of the area include Red-backed Shrike and Reed Warbler amongst other species. See the birdlist below.
Restriction to access the inner ways in breeding season, but the outer ways still enable you to see most of the area. Access easy by bike or foot. Park your car near Neuershausen or Nimburg to reach the area.