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

Blyth's Reed Warbler

Acrocephalus dumetorum

A medium-sized, plain Old World warbler characterized by its olive-brown plumage and extraordinary ability to mimic other bird species.

What it sounds like

A slow, melodic, and varied song featuring expert mimicry and rhythmic trills; the alarm call is a hard, repetitive 'chak'.

Reference call, compare with what you heard

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Rec. Karsten Molværsmyr · NorwayCC BY-NC-SA Xeno-canto

Field notes

It is considered one of the finest mimics in the avian world, weaving the calls of dozens of other species into its slow, rhythmic song.
Unlike many of its relatives in the genus Acrocephalus, it frequently breeds in drier habitats like bushy clearings and orchards rather than reed beds.
The species is morphologically almost identical to the Marsh Warbler and Eurasian Reed Warbler, often requiring wing-formula analysis for in-hand identification.
It undergoes a complete molt twice a year, once on its breeding grounds and once in its wintering quarters.
The bird was named after Edward Blyth, the curator of the Asiatic Society of Bengal museum who described many species of the Indian subcontinent.

Habitat

Thick undergrowth, tall herbs, and bushy margins of forests or marshes, typically in drier sites than other reed warblers.

Range

Breeds from Eastern Europe across Central Asia to Lake Baikal; winters mainly in India, Sri Lanka, and Myanmar.

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 Cape Verde Swamp WarblerAcrocephalus brevipennis Caroline Reed WarblerAcrocephalus syrinx

Heard a Blyth's Reed Warbler?

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