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

Eurasian Blue Tit

Cyanistes caeruleus

A small, brightly colored passerine recognizable by its azure crown and yellow breast, frequently seen performing acrobatic maneuvers while foraging.

What it sounds like

A high-pitched, thin 'tsee-tsee-tsee' followed by a vibrant, descending trill.

Reference call, compare with what you heard

0:00 / 2:09

Rec. Joost van Bruggen · NetherlandsCC BY-NC-ND Xeno-canto

Field notes

The blue crown feathers reflect ultraviolet light, which the birds use to evaluate the health and social status of potential mates.
They gained fame in the 20th century for their ability to learn and spread the behavior of pecking through foil milk bottle tops to reach cream.
During the breeding season, a single pair may provide up to 10,000 caterpillars to their chicks to ensure rapid growth.
They are known to incorporate aromatic herbs like lavender or mint into their nests to act as a natural disinfectant against parasites.
Blue Tits are highly acrobatic feeders, often hanging upside down from the tips of thin branches to reach insects and seeds.

Habitat

Deciduous and mixed woodlands, parks, gardens, and hedgerows.

Range

Widespread throughout Europe, extending into Western Asia and parts of North Africa.

Similar & commonly confused birds

African Blue TitCyanistes teneriffae Azure TitCyanistes cyanus

Heard a Eurasian Blue Tit?

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