Merlin Bird ID by Cornell Lab

59.4K reviews
Content rating
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About this app

What's that bird? Ask Merlin—the world’s leading app for birds. Just like magic, Merlin Bird ID will help you solve the mystery.

Merlin Bird ID helps you identify birds you see and hear. Merlin is unlike any other bird app—it's powered by eBird, the world’s largest database of bird sightings, sounds, and photos.

Merlin offers four fun ways to identify birds. Answer a few simple questions, upload a photo, record a singing bird, or explore birds in a region.

Whether you’re curious about a bird you’ve seen once or you’re hoping to identify every bird you can find, the answers are waiting for you with this free app from the renowned Cornell Lab of Ornithology.

• Expert ID tips, range maps, photos, and sounds help you learn about the birds you spot and build birding skills.
• Customized lists of birds to find where you live or travel
• Merlin was created by bird experts for everyone.
• Merlin is global—look up any bird at any location.
• Keep track of your sightings—linked to eBird, a global database of more than 1 billion bird observations!

• Powered by Visipedia, Merlin Sound ID and Photo ID uses deep learning to identify birds in photos and sounds. Merlin learns to recognize bird species based on training sets of millions of photos and sounds collected by birders at, archived in the Macaulay Library at the Cornell Lab of Ornithology.
• Merlin delivers the most accurate results thanks to experienced birders, who curate and annotate sightings, photos, and sounds, who are the true magic behind Merlin.

• Choose bird packs that contain photos, songs, and calls, and identification help for anywhere in the world, including Mexico, Costa Rica, South America, Europe, Africa, the Middle East, India, Australia, Korea, Japan, China, and more.
• It’s available in your language. Merlin is available in English, Spanish, Portuguese, French, Hebrew, German, Japanese, Korean, Turkish, Simplified Chinese, and Traditional Chinese.

The Cornell Lab of Ornithology’s goal is to help you and millions of others to learn about birds. Our nonprofit mission to improve the understanding and protection of birds and nature is made possible by the generosity of Cornell Lab members, supporters, and citizen-science contributors.
Updated on
Jul 5, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, App activity and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

58.1K reviews
Cristian Munoz
September 2, 2023
I Love This App, But Bugs Need Fixing. Whenever I try to explore birds in other cities, I'll type in the city and nothing will pop up. The app also cannot find my current location. This is a new occurrence and I hope it gets fixed soon because I do love this app. Also, the bird ID for pictures and sounds have showed less possible choices. I'm having such a hard time IDing birds using pictures and sounds, even with good pictures. Again, this hasn't happened before and I hope it's resolved.
25 people found this review helpful
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Elaine Adelaide Reder
July 11, 2023
I love using this app when I go on hikes! It almost always finds the birds I saw and doesn't waste my time with annoying ads. I recently started using the sound identification feature which I was avoiding before because I didn't think that my phone's microphone would be enough. Not true! It doesn't pick up the very farthest birds that I can hear, but it still picks up most of the bird calls in the area and suggests birds and professional recordings to compare. Very easy to use, great features!
109 people found this review helpful
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July 29, 2023
Excellent app, this is the first thing I used to identify birds and it just works! Very intuitive and easy to use, I haven't used the photo ID much but the sound ID is genuinely incredible, so far I have been able to confirm it has been 100% so far, and the step by step with location filter makes it pretty easy to find what bird you are seeing! I haven't seen a single ad, and this app has been instrumental in inspiring a new birder, thank you to the developers!
45 people found this review helpful
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What's new

We’re giving Merlin a makeover! We hope you find the new navigation system sleeker and more intuitive to use.

In addition to being able to more quickly navigate around the app, Sound ID can now run in the background while you use other parts of Merlin, like Explore and Life List.