[timbre]

The NABirds dataset: http://dl.allaboutbirds.org/nabirds.

But it's North American birds, not sure if you specifically want to cover birds that show up in Finland or if that was just your inspiration.

There are a couple apps that do what you're talking about, but they're both North American birds only as well.

http://www.birdsnap.com/ (I was involved in this one)

http://merlin.allaboutbirds.org/