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

Lesser Antillean Swift

Chaetura martinica

A small, soot-colored aerial insectivore endemic to the Lesser Antilles, recognized by its rapid, erratic wingbeats and cigar-shaped silhouette.

What it sounds like

A high-pitched, rapid series of metallic twittering and 'tsip' notes.

Reference call, compare with what you heard

0:00 / 0:05

Rec. Étienne Leroy · FranceCC BY-NC-SA Xeno-canto

Field notes

It is a sedentary resident, meaning it does not migrate and remains on its home islands year-round.
Nesting occurs in hollow trees or man-made chimneys, where twigs are glued to vertical surfaces using the bird's adhesive saliva.
It is restricted to five specific islands: Guadeloupe, Dominica, Martinique, Saint Lucia, and Saint Vincent.
The species features a noticeably paler gray rump and throat which contrast with its dark fuscous-brown plumage.
Like other Chaetura swifts, it spends the vast majority of its daylight hours on the wing, drinking and bathing while flying over water surfaces.

Habitat

Found over primary and secondary forests, mountain ridges, and occasionally open lowland country.

Range

The Lesser Antilles (Guadeloupe, Dominica, Martinique, Saint Lucia, and Saint Vincent).

Similar & commonly confused birds

Ashy-tailed SwiftChaetura andrei Band-rumped SwiftChaetura spinicaudus Chapman's SwiftChaetura chapmani Chimney SwiftChaetura pelagica Costa Rican SwiftChaetura fumosa Gray-rumped SwiftChaetura cinereiventris Pale-rumped SwiftChaetura egregia Short-tailed SwiftChaetura brachyura

Heard a Lesser Antillean Swift?

Open Birdsong, tap record, and identify the bird singing near you in seconds — then collect it in your field journal.

Identify a bird by its song