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

Siberian House-Martin

Delichon lagopodum

The Siberian House-Martin is a small, aerial insectivore characterized by its striking white rump and densely feathered legs. Formerly considered a subspecies of the Northern House-Martin, it is now recognized as a distinct species based on morphology and vocalizations.

What it sounds like

A dry, scratchy 'zrit' or 'tshirrp' that is generally more buzzing and less liquid than the Northern House-Martin.

Reference call, compare with what you heard

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Rec. Geoff Carey · Russian FederationCC BY-NC-SA Xeno-canto

Field notes

Its specific epithet 'lagopodum' means 'hare-footed,' referring to the thick white feathers that cover its legs and toes.
It possesses a significantly more extensive white rump patch than the Northern House-Martin, extending further down the flanks.
The tail is noticeably less forked and more square-ended compared to its western relative, Delichon urbicum.
This species is a colonial breeder that constructs closed mud nests with small entrance holes under cliff overhangs or building eaves.
Recent taxonomic revisions elevated it to full species status due to lack of hybridization in zones of contact with other house-martins.

Habitat

Open country near water, mountain cliffs, and increasingly urban environments for nesting.

Range

Breeds across eastern Siberia, Mongolia, and northern China; migrates to Southeast Asia for the winter.

Similar & commonly confused birds

Asian House-MartinDelichon dasypus Nepal House-MartinDelichon nipalense Western House-MartinDelichon urbicum

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