Langtjedn is a small nature reserve which is easily accessible from the road near Gamlestølen in Etnedal. The lake itself is shallow and productive, and it is fringed by varied wetlands and spruce forest. Half of the 82 bird species that have been recorded in the reserve are wetland birds of both lowlands and mountains.
Among regular species are Slavonian Grebe (1 breeding pair), Eurasian Teal, Common Goldeneye, Tufted Duck, Velvet Scoter, Common Snipe, Common Redshank, Green Sandpiper, Eurasian Curlew, Yellow Wagtail, Whinchat, Redwing, Black-headed Gull, Northern Hawk Owl and Siberian Jay.
Please act responsibly when visiting and don't disturb the birds. You can move freely in the area throught the year, but it is not allowed to set up camouflages or tents, fly drones or operate model boats on the lake. Dogs must be capt on a leash at all times.