I was mighty puzzled in Trondheim, because the most common city bird was neither the sparrow (never saw a one) nor the gull (there were some of those) but the hooded crow, which was all over the streets, scavenging much as sparrows and pigeons do with us. I find crows a bit worrying... Much nicer was a tree full of little finches which weren't scared at all, even when I stood right by it and talked to them.