[quokka]

Merlin is fantastic!

But it it's not 100% accurate and currently focuses on birds from Canada, the US, and Europe.

[pfdietz]

I've found it to be quite accurate here in upstate NY, with a few recognizable exceptions. In particular, sometimes it seems to think it's hearing a blue-headed vireo when a red-eyed vireo is singing. Also, it sometimes misreports yellow-rumped warblers.