This free iPhone app from Cornell answers nature's greatest springtime mystery
By Zac Hall
Published on April 24, 2026.
Free iPhone app from the Cornell Lab of Ornithology, Merlin Bird ID, can identify birds by sound. The app combines the sound of birds singing or chirping to identify what type of bird is singing. It is available for free on both iPhone and Android and has a 4.9-star rating from 109K reviews on the App Store. The Life List feature allows users to collect bird identifications by date, location, and bird type.
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