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

Collared Petrel

Pterodroma brevipes

A small, agile gadfly petrel of the tropical South Pacific, characterized by its highly variable plumage and distinctive dark breast band. It is a master of dynamic soaring, frequently observed performing high, arcing glides over the open ocean.

What it sounds like

A rhythmic series of high-pitched, staccato 'ti-ti-ti' whistles and drawn-out, mournful wails or moans.

Reference call, compare with what you heard

No reference call found yet · Xeno-canto

Field notes

The species is highly polymorphic, with individuals ranging from 'light morphs' with white underparts to 'dark morphs' that are almost entirely sooty-brown.
Unlike many seabirds that nest on coastlines, it breeds inland on steep, forested volcanic ridges at altitudes up to 1,500 meters.
It was previously considered a subspecies of Gould's Petrel (Pterodroma leucoptera) but is now recognized as a distinct species.
The population is listed as Vulnerable, primarily threatened by invasive predators like rats and feral cats at its limited breeding sites.
It is a nocturnal visitor to its nesting colonies, arriving under the cover of darkness to avoid predation by diurnal raptors.

Habitat

Pelagic open ocean; nests in burrows or rock crevices on high-altitude, densely forested mountain slopes.

Range

Southwestern Pacific Ocean, with major breeding colonies in Fiji and Vanuatu.

Similar & commonly confused birds

Atlantic PetrelPterodroma incerta Barau's PetrelPterodroma baraui Bermuda PetrelPterodroma cahow Black-capped PetrelPterodroma hasitata Black-winged PetrelPterodroma nigripennis Bonin PetrelPterodroma hypoleuca Cape Verde PetrelPterodroma feae Chatham Islands PetrelPterodroma axillaris

Heard a Collared Petrel?

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