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

Nazca Booby

Sula granti

A large, striking white seabird of the eastern Pacific, distinguished from the similar Masked Booby by its bright orange-yellow bill and unique nesting behaviors.

What it sounds like

Males deliver thin, high-pitched whistles; females emit loud, raspy, repetitive quacks or honks.

Reference call, compare with what you heard

0:00 / 0:38

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

Field notes

Practices obligate siblicide, where the first-hatched chick routinely ejects its younger sibling from the nest to die of exposure.
Taxonomically split from the Masked Booby in 2002 based on distinct mitochondrial DNA and assortative mating patterns.
Specifically selects nesting sites on flat, open ground near cliff edges to utilize updrafts for easier takeoff.
Displays sexual dimorphism in vocalization; males produce high-pitched whistles while females give harsh, guttural honks.
Feeds primarily on sardines and flying fish, often traveling long distances from colonies to forage in pelagic waters.

Habitat

Arid, rocky volcanic islands and open tropical oceanic waters.

Range

Eastern Pacific Ocean, ranging from the Galápagos Islands and Clipperton Island to the coast of Colombia and Ecuador.

Similar & commonly confused birds

Blue-footed BoobySula nebouxii Brown BoobySula leucogaster Cocos BoobySula brewsteri Masked BoobySula dactylatra Peruvian BoobySula variegata Red-footed BoobySula sula

Heard a Nazca 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