Identify Bird Songs and Calls Sound ID listens to the birds around you and shows real-time suggestions for who’s singing. Sound ID works completely offline, so you can identify birds you hear no matter where you are. Photo ID works completely offline, so you can identify birds in the photos you take no matter where you are. Merlin offers quick identification help for all levels of bird watchers and outdoor enthusiasts to help you learn about the birds in any country in the world. Tap “This is my bird!” each time you identify a bird, and Merlin will add it to your growing life list.