What bird is singing? Merlin Bird ID app offers instant answers

And it's usually followed up by a question: What was that bird? The question just got much easier to answer. The Cornell Lab of Ornithology's free Merlin Bird ID app can now identify bird sounds. Merlin can recognize the sounds of more than 400 species from the U.S. and Canada, with that number set to expand rapidly in future updates. As Merlin listens, it uses artificial intelligence (AI) technology to identify each species, displaying in real time a list and photos of the birds that are singing or calling. Automatic song ID has been a dream for decades, but analyzing sound has always been extremely difficult.