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

Yellow-browed Warbler

Phylloscopus inornatus

A tiny, restless Old World leaf-warbler characterized by its prominent double wing-bars and a bold, creamy-yellow supercilium.

What it sounds like

A distinctive, high-pitched, and piercingly loud upslurred 'tsoo-eet' or 'weesp'.

Reference call, compare with what you heard

0:00 / 1:10

Rec. Bo Shunqi 薄顺奇 · ChinaCC BY-NC-SA Xeno-canto

Field notes

Despite its tiny size, weighing between 4 to 9 grams, it performs an immense migration from Siberia to Southeast Asia.
It is a frequent autumn vagrant to Western Europe, likely due to 'reverse migration' or longitudinal expansion.
The species is highly arboreal and active, constantly flicking its wings while gleaning insects from the underside of leaves.
It was formerly considered conspecific with Hume's Warbler, but the two are now split based on vocal and plumage differences.
During the breeding season, it is most commonly associated with lowland and montane birch and larch forests in the Palearctic.

Habitat

Boreal forests, taiga, and mixed woodlands during breeding; tropical forests, mangroves, and gardens during winter.

Range

Breeds across Northern Asia and Siberia; winters primarily in South 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 Yellow-browed 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