This is bird note.

On a morning walk with her dog Ari, near Denali National Park in Alaska.

Denise heard an unfamiliar bird call.

She asked the dog for an opinion.

What are you making that noise?

But no luck there.

She recorded the mysterious screech on her phone.

uploading the sound to Birdnet, an online tool,

matched the call to a Northern Hawk Owl,

a medium-sized owl that lives in northern boreal forests.

Birdnet's creators, the Cornell Lab of Ornithology and Kemnets University of Technology in Germany,

trained the software on thousands of bird calls and songs.

BirdNet uses artificial intelligence to make an educated guess at the bird calls in any recording.

And Cornell's well-known Merlin Bird ID app now has

sound ID too. It's as simple as opening the app, choosing sound ID, and hitting record. It can pick out multiple species in the same recording.

These tools aren't infallible. Some similar calls can confuse the app and they might not detect anything with too much background noise.

Currently focused on species in North America and Europe, BirdNet is working on expanding to more

regions. But already, it's amazing to see what these AI tools can do.

For Bird Note, I'm Ariana Remmel. you're