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

Blue-footed Booby

Sula nebouxii

The Blue-footed Booby is a large marine bird iconic for its vibrant cobalt-colored feet and elaborate ritualized courtship displays. It is a highly specialized plunge-diver primarily associated with the Galápagos Islands and the eastern Pacific coast.

What it sounds like

Sexually dimorphic vocalizations: males produce high-pitched, multi-syllabic whistles, whereas females give low-frequency, harsh grunts or honks.

Reference call, compare with what you heard

0:00 / --:--

Rec. Barry Edmonston · EcuadorCC BY-NC-SA Xeno-canto

Field notes

The intensity of the blue color in their feet serves as a direct indicator of their current health and nutritional status, derived from carotenoid pigments in their diet.
During courtship, males perform a rhythmic 'skypointing' and high-stepping dance to showcase their feet to prospective mates.
They are capable of diving into the water from heights of 100 feet, utilizing specialized air sacs in their skulls to cushion the impact.
Unlike most birds, they lack brooding patches and instead use their highly vascularized webbed feet to incubate their eggs.
Females are physically larger than males and possess larger pupils, which provides a reliable method for field sexing.

Habitat

Arid coastal islands and rocky cliffs for nesting, with foraging occurring in pelagic and nearshore marine environments.

Range

Eastern Pacific Ocean, from the Gulf of California to Peru, including the Galápagos Islands.

Similar & commonly confused birds

Brown BoobySula leucogaster Cocos BoobySula brewsteri Masked BoobySula dactylatra Nazca BoobySula granti Peruvian BoobySula variegata Red-footed BoobySula sula

Heard a Blue-footed Booby?

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