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

Pallas's Leaf Warbler

Phylloscopus proregulus

A tiny, hyperactive Old World warbler distinguished by its striking yellow rump and prominent pale crown stripe.

What it sounds like

A soft, high-pitched 'tse-weet' or 'choo-ee' call; the song is a powerful series of whistles and trills.

Reference call, compare with what you heard

0:00 / --:--

Rec. Peter Boesman · ChinaCC BY-NC-ND Xeno-canto

Field notes

One of the smallest Palearctic warblers, weighing as little as 4.5 to 7 grams.
Known as the 'seven-colored bird' in some regions due to its complex pattern of green, yellow, and white plumage.
Despite breeding in East Asia, it is a famous late-autumn vagrant to Europe, likely due to reverse migration.
The bright yellow rump patch is a key diagnostic feature, often only visible when the bird is hovering or flicking its wings.
Its song is remarkably loud, complex, and canary-like, contrasting sharply with its diminutive physical size.

Habitat

Coniferous taiga and mixed forests during breeding; evergreen broadleaf and montane forests in winter.

Range

Breeds in southern Siberia, Mongolia, and Northeast China; winters in South China and Southeast Asia.

Similar & commonly confused birds

Alström's WarblerPhylloscopus soror Arctic WarblerPhylloscopus borealis Ashy-throated WarblerPhylloscopus maculipennis Biak Leaf WarblerPhylloscopus misoriensis Bianchi's WarblerPhylloscopus valentini Black-capped Woodland-WarblerPhylloscopus herberti Blyth's Leaf WarblerPhylloscopus reguloides Brooks's Leaf WarblerPhylloscopus subviridis

Heard a Pallas's Leaf Warbler?

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