Birdwatching at Østensjøvannet
Østensjøvannet is a small lake in the eastern part of Oslo, perfect for family trips. Here, you will get very close to the birds. There is a trail all the way around Østensjøvannet and also a playground in the area. Many gulls, ducks, and geese enjoy themselves in and around Østensjøvannet. And as you get very close to the birds, this place is perfect for taking pictures of them. In the early part of the summer, birdlife here is intense, and the sound level is pretty high. Particularly the large colony of Black-headed Gulls will not go unnoticed.
You might get tempted to feed the gulls, but adhere to the posters around the lake, and be cautious not to contribute to overfeeding or littering.