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

Red-winged Wood-Rail

Aramides calopterus

A secretive and striking rail of the western Amazon, the Red-winged Wood-Rail is best identified by its vibrant chestnut-red wings and preference for secluded forest waterways.

What it sounds like

A loud, piercing, and rhythmic series of 'kui-co-co' or 'klow' notes, often delivered in a repetitive, chanting duet.

Reference call, compare with what you heard

0:00 / 0:19

Rec. Paul Coopmans · EcuadorCC BY-NC-SA Xeno-canto

Field notes

It is distinguished from the similar Gray-cowled Wood-Rail by its solid chestnut-red upperwing coverts and lack of olive tones on the back.
Unlike many rail species that inhabit open marshes, it is specifically adapted to the dense undergrowth of primary lowland rainforests.
The species is highly territorial and is most often found near fast-flowing forest streams or permanent swampy depressions.
It possesses a bright yellow-green bill with a distinct red base and long, sturdy coral-red legs for navigating tangled forest floors.
Despite its bright plumage, it is notoriously difficult to observe due to its shy nature and tendency to run into cover rather than fly when disturbed.

Habitat

Tropical moist lowland forest undergrowth, typically near streams and marshy areas.

Range

Western Amazon Basin, encompassing parts of eastern Ecuador, northeastern Peru, and western Brazil.

Similar & commonly confused birds

Brown Wood-RailAramides wolfi Giant Wood-RailAramides ypecaha Gray-cowled Wood-RailAramides cajaneus Little Wood-RailAramides mangle Red-winged Wood-RailAramides calopterus Rufous-necked Wood-RailAramides axillaris Russet-naped Wood-RailAramides albiventris Slaty-breasted Wood-RailAramides saracura

Heard a Red-winged Wood-Rail?

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Identify a bird by its song