I know most of the sea birds species in Copenhagen from my daily walks with the dog, but since I started paddling I have seen other species you don’t normally see in town.
In the city we have Mallard, Coot, Tufted Duck, Great Crested Grebe, Mute Swan, Grey Heron, Greylag Goose, and several species of seagulls.
The “new” birds I have seen are the Common Eider (they breed in large numbers on Saltholm), the Great Cormorant, the Canada Goose and the red beaked wading bird I saw yesterday might have been a Eurasian Oystercatcher though I remember the colours a bit differently.
There’s also a particularly large species of gull at the beach park but I don’t know which species it is. I found one dead in the water one day, it must have had a wing span of over a meter.