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

Brownish-flanked Bush Warbler

Horornis fortipes

A small, secretive warbler characterized by its drab olive-brown plumage and surprisingly loud, explosive song emitted from dense thickets.

What it sounds like

A long, drawn-out, high-pitched introductory whistle ending in an abrupt, multi-note flourish: 'weeeeee-ti-ti-tyu'.

Reference call, compare with what you heard

0:00 / 1:25

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

Field notes

It features a prominent pale supercilium and a dark eye-stripe that are key for field identification.
The species is highly skulking, often remaining invisible even while singing just a few meters away.
It undergoes altitudinal migration, breeding in high-elevation scrub and moving to lower valleys in winter.
Its diet consists almost entirely of small insects and larvae gleaned from foliage and the forest floor.
The nest is typically a ball-shaped structure made of grass and leaves, hidden low in dense vegetation.

Habitat

Dense undergrowth, bamboo thickets, and secondary scrub in montane regions.

Range

The Himalayas across southern China to Taiwan and parts of Southeast Asia.

Similar & commonly confused birds

Aberrant Bush WarblerHorornis flavolivaceus Fiji Bush WarblerHorornis ruficapilla Hume's Bush WarblerHorornis brunnescens Japanese Bush WarblerHorornis diphone Manchurian Bush WarblerHorornis canturians OdediHorornis haddeni Palau Bush WarblerHorornis annae Philippine Bush WarblerHorornis seebohmi

Heard a Brownish-flanked Bush 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