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

Raso Skylark

Alauda razae

The Raso Skylark is a critically endangered passerine restricted to a single tiny islet in the Cape Verde archipelago, known for its heavy bill and ground-dwelling lifestyle. It is one of the rarest birds in the world, with a population that fluctuates dramatically based on seasonal rainfall.

What it sounds like

A rich, melodious series of warbles and whistles, similar to the Eurasian Skylark but typically shorter and less sustained.

Reference call, compare with what you heard

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Rec. Tero Linjama · Cape VerdeCC BY-NC-SA Xeno-canto

Field notes

It is endemic exclusively to the 7-square-kilometer Raso Islet, making it one of the most range-restricted bird species globally.
Males possess significantly longer bills than females, a rare example of sexual dimorphism used to exploit different foraging niches in the soil.
The species is primarily a specialist feeder, using its robust bill to excavate the bulbs of the nutgrass Cyperus bulbosus.
During severe multi-year droughts, the population has been known to crash to fewer than 100 individuals.
Unlike many other larks, it rarely performs high-altitude song flights, instead singing from low rocks or during short, low-level glides.

Habitat

Arid, volcanic stony plains with sparse vegetation and sandy patches.

Range

Raso Islet, Cape Verde.

Similar & commonly confused birds

Eurasian SkylarkAlauda arvensis Oriental SkylarkAlauda gulgula White-winged LarkAlauda leucoptera

Heard a Raso Skylark?

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Identify a bird by its song