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 Islands Swiftlet

Aerodramus inquietus

The Caroline Islands Swiftlet is a small, dark aerial insectivore endemic to Micronesia, distinguished by its ability to navigate deep caves using echolocation.

What it sounds like

High-pitched, metallic twittering and sharp 'click' sounds used for echolocation.

Reference call, compare with what you heard

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Rec. Todd Mark · MicronesiaCC BY-NC-SA Xeno-canto

Field notes

It uses rudimentary echolocation to fly and nest in total darkness within cave systems.
The species is non-migratory, remaining on its respective islands throughout the year.
Nests are bracket-like structures made from moss, grass, and saliva attached to cave walls.
It was historically considered a subspecies of the Uniform Swiftlet (Aerodramus vanikorensis).
Three distinct subspecies are recognized, inhabiting Yap, Pohnpei, and the islands of Chuuk and Kosrae.

Habitat

Lowland and montane forests, mangroves, and open grasslands, requiring caves for nesting.

Range

The Caroline Islands of the western Pacific (Federated States of Micronesia).

Similar & commonly confused birds

Ameline SwiftletAerodramus amelis Atiu SwiftletAerodramus sawtelli Australian SwiftletAerodramus terraereginae Bare-legged SwiftletAerodramus nuditarsus Black-nest SwiftletAerodramus maximus Himalayan SwiftletAerodramus brevirostris Indian SwiftletAerodramus unicolor Mariana SwiftletAerodramus bartschi

Heard a Caroline Islands Swiftlet?

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