How accurate is Birdsong's bird identifier?

It runs Google's Perch, a research-grade acoustic model covering nearly 15,000 species. When a call is ambiguous, we say so honestly and let you record a second clip to confirm, rather than guessing.

Is my recording stored?

No. Your audio is used to identify the bird in the moment and isn't saved to our servers. The birds you confirm are kept as cards in your own field journal; the recordings themselves are not.

Is the bird identifier free?

Yes — identify birds every day for free, no account required. Birdsong Pro ($3.99/mo or $39.99/yr) unlocks unlimited IDs, full field guides, your growing collection, and shareable Field Report cards.

Do I need an account or internet to identify a bird?

You'll need a connection to identify, since the AI runs in the cloud. No account is needed to try it — sign in with Google or email to save your field journal and sync it across devices.

Birdsong field guide

Caroline Reed Warbler

Acrocephalus syrinx

A small, slender songbird endemic to the Caroline Islands, known for its complex vocalizations and presence in diverse island thickets.

What it sounds like

A complex and melodious song consisting of liquid trills, whistles, and occasional harsh chattering notes.

Reference call, compare with what you heard

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Rec. JVMoore · MicronesiaCC BY-NC-SA Xeno-canto

Field notes

It is the only member of the genus Acrocephalus native to the Caroline Islands.
The species displays notable morphological variation across different island populations, including bill length and plumage tone.
Unlike many other reed warblers, it frequently inhabits upland forests and gardens in addition to traditional wetland environments.
Its long, thin bill is specialized for gleaning small invertebrates and larvae from deep within dense foliage.
Breeding occurs year-round across its range, with nests typically constructed as deep cups attached to vertical stems.

Habitat

Mangroves, reed beds, dense thickets, forest edges, and upland secondary growth.

Range

The Caroline Islands of Micronesia, including Palau and the Federated States of Micronesia.

Similar & commonly confused birds

Aguiguan Reed WarblerAcrocephalus nijoi Aquatic WarblerAcrocephalus paludicola Australian Reed WarblerAcrocephalus australis Basra Reed WarblerAcrocephalus griseldis Black-browed Reed WarblerAcrocephalus bistrigiceps Blunt-winged WarblerAcrocephalus concinens Blyth's Reed WarblerAcrocephalus dumetorum Cape Verde Swamp WarblerAcrocephalus brevipennis

Heard a Caroline Reed Warbler?

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Identify a bird by its song