Frequently asked questions
Answers about Bird Lens bird identification tools, accuracy limits, privacy, and how photo and sound ID work on the web.
Getting started
How Bird Lens helps you identify birds in the field and on the web.
What is Bird Lens?
Bird Lens is an AI bird identifier. Use web tools to analyze a photo, a recording, or written field notes, then explore species guides and reference catalogs on the site.
Do I need an account to use the web tools?
No. The public identification tools on birdlens.app work without signing in. Agent and API integrations documented in auth.md are also unauthenticated for the public bird-tools endpoints.
Which tools should I use first?
Start with Photo ID when you have a clear image, Sound ID when you only captured audio, and Field Notes ID when you observed the bird but have no media. Use Similar Species when you already have two candidate names to compare.
Photo identification
What makes a good photo for identification?
Use a sharp image where the bird fills a reasonable part of the frame. Bill shape, head pattern, wing bars, tail length, and posture matter more than artistic background blur. Include habitat context in your notes when plumage is ambiguous.
What file types are accepted?
JPEG, PNG, and WebP uploads are supported. Very small or heavily cropped images may produce weaker matches.
Why might photo ID be uncertain?
Juvenile plumage, backlighting, distant birds, hybrid possibilities, and look-alike species can all reduce confidence. The tool is designed to rank candidates and explain limits rather than force a single certain answer.
Sound identification
How does sound identification work?
You upload a bird recording (MP3 or WAV) plus observation notes. The backend sends the audio clip and your notes to our AI gateway for multimodal analysis—it listens to the recording directly rather than transcribing it first.
How long should my recording be?
Aim for at least ten seconds with the target bird loud enough to hear and minimal wind, traffic, or human speech. Repeated phrases or songs help more than a single faint chip note.
Is sound ID the same as speech-to-text?
No. Speech-to-text would convert audio into words. Sound ID analyzes the acoustic pattern of the bird call or song itself, together with your habitat and behavior notes.
Field notes and comparisons
What should I include in field notes?
Size and shape, colors and patterns, bill and tail, behavior, habitat, date, and location all help. Note what you ruled out and what you are unsure about.
When should I use Similar Species?
Use it when you already have two plausible names— for example American Robin vs Eastern Bluebird—and want diagnostic differences for bill, breast, tail, voice, habitat, and season.
Privacy, AI, and support
Are my uploads stored permanently?
Identification requests are processed to return a result. Do not upload sensitive personal content. See the Privacy Policy for retention details and contact support if you have a data question.
Can AI misidentify a bird?
Yes. Treat results as educated suggestions, not authoritative records. Confirm with field guides, local experts, eBird checklists, or additional angles before reporting rare species.
Something failed or looks wrong—what now?
Check your connection and try again with a shorter note or clearer media. For product issues, visit /support or email the team with the tool name, device, and what you expected.
Ready to try a tool?
Pick Photo ID, Sound ID, Field Notes, or Similar Species and run a test with a known backyard bird.
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