The variety of forest, fens and heath makes the Overasseltse en Hatertse Vennen a perfect area for a long walk. The forests are inhabited by Black Woodpecker, Eurasian Green Woodpecker, Great Spotted Woodpecker, Lesser Spotted Woodpecker, Middle Spotted Woodpecker, Crested Tit, European Pied Flycatcher and Tawny Owl.
Visit the different fenns in spring and summer for waterbirds like Little Grebe, Common Teal, Greylag Goose, Common Pochard and Water Rail. In late summer waders can be seen on the mud when some fenss dry out.
On the heaths Wood Lark and Yellowhammer breed and Eurasian Hobby and European Honey-buzzard can be seen soaring overhead. Red-backed Shrike bred in the area in 2019 for the first time since decades. In winter Great Grey Shrike can be found in the same place.
The area is also very rich in dragonflies and rare insects like Wart-biter and Heath grasshopper.
The best place to start your walk is the pakring near the Diervoor Farm. From here different walks can be made. The walk on the map (6,6 km) is marked in the field with yellow marks.