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

Bonaparte's Nightjar

Caprimulgus concretus

A small, elusive nocturnal bird of Southeast Asian forests, characterized by its dark, intricately patterned plumage and preference for lowland habitats.

What it sounds like

A series of soft, liquid, and hollow notes often described as a mellow, bubbling 'pook-pook-pook'.

Reference call, compare with what you heard

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Rec. yann muzika · IndonesiaCC BY-NC-SA Xeno-canto

Field notes

Named after French biologist Charles Lucien Bonaparte, a nephew of Napoleon Bonaparte.
It is one of the smallest nightjars in its range, typically measuring only 21 to 22 centimeters in length.
The species is sexually dimorphic; males possess conspicuous white patches on the outer tail feathers, whereas females have buffy patches.
It is currently classified as Vulnerable by the IUCN due to the rapid loss of its lowland forest habitat to logging and agriculture.
Unlike many other nightjars that prefer open country, this species is closely associated with primary and mature secondary forests.

Habitat

Primary and secondary lowland evergreen forests, forest edges, and occasionally coastal scrub.

Range

The Sundaic region, including Sumatra, Borneo, and Belitung Island.

Similar & commonly confused birds

Andaman NightjarCaprimulgus andamanicus Bates's NightjarCaprimulgus batesi Chirruping NightjarCaprimulgus griseatus Donaldson Smith's NightjarCaprimulgus donaldsoni Egyptian NightjarCaprimulgus aegyptius Eurasian NightjarCaprimulgus europaeus Fiery-necked NightjarCaprimulgus pectoralis Freckled NightjarCaprimulgus tristigma

Heard a Bonaparte's Nightjar?

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