First of all, we are not bird watchers or into the hobby. We went to Runde island by coincident. However it turned out to be a fantastic experience, we walked up to the various bird areas 3 times in the 24 hour period we stayed there. We got very qualified information at the camping place at Goksør, they are extremely service minded and knowledgable. The walk up takes 45-60 minutes and is on good tracks. Different areas for different birds. All is interesting but the main attraction for us was the Atlantic Puffin (Lundefugl). You could see them during the entire day flying between the ocean and nest in mountain side. It's catching several fishes in same tour and often diving 10 meter, or even down to 30, thereafter delivering the goods to the small baby birds in nest. It's a fascinating view and experience. The Lundefugl is very nice looking, something related to parrots. It didn't seemed scared by human beings rather curious. The really highlight is in the evening (around 8-9 pm) where all of them do the final flight home from the sea, and it's a lot of them. They spend some time socializing among them self which is very interesting to watch. Some of them could get as close as a half meter or so. GREAT EXPERIENCE and absolutely RECOMMENDED. Remember to bring your camera, video or so, as long as your good mood. Among the other birds it's worth mention the Sea Eagle which it there.