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

Chestnut-capped Warbler

Basileuterus delattrii

A vibrant, active wood-warbler of Central and South America, distinguished by its bold chestnut head markings and entirely bright yellow underparts.

What it sounds like

A rapid, dry, staccato series of sharp 'tsit' or 'chit' notes that often accelerate into a mechanical trill.

Reference call, compare with what you heard

0:00 / 0:41

Rec. Paul Driver · Costa RicaCC BY-NC-SA Xeno-canto

Field notes

It was formerly classified as a subspecies of the Rufous-capped Warbler but is now recognized as a distinct species based on plumage and vocalizations.
Unlike the Rufous-capped Warbler, this species displays entirely bright yellow underparts from the throat to the vent.
They are highly territorial year-round and are most frequently observed in pairs rather than mixed-species foraging flocks.
The species builds an 'oven' nest, which is a domed structure with a side entrance hidden on the ground or on a steep bank.
They exhibit a characteristic behavior of cocking their tails upward and flicking them sideways while foraging through dense undergrowth.

Habitat

Dense secondary growth, coffee plantations, and shrubby edges of tropical dry and montane forests.

Range

Southern Guatemala through Central America to northern Colombia.

Similar & commonly confused birds

Black-cheeked WarblerBasileuterus melanogenys Costa Rican WarblerBasileuterus melanotis Golden-browed WarblerBasileuterus belli Golden-crowned WarblerBasileuterus culicivorus Pirre WarblerBasileuterus ignotus Rufous-capped WarblerBasileuterus rufifrons Tacarcuna WarblerBasileuterus tacarcunae Three-banded WarblerBasileuterus trifasciatus

Heard a Chestnut-capped Warbler?

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