Sound credits
The bird calls on this site are real field recordings, shared by their recordists on Xeno-canto and Wikimedia Commons under Creative Commons licences. Thank you to everyone who recorded them.
- Kerning WrenXC461185 · CC BY-SA 4.0
Eurasian Wren, recorded by Marie-Lan Taÿ Pamart - Variant FinchXC568882 · CC BY-SA 4.0
Common Chaffinch, recorded by godweetwat - Baseline LarkXC528350 · CC BY-SA 4.0
Eurasian Skylark, recorded by Jens Loose - Wayfinding DoveXC541143 · CC BY-SA 4.0
Rock Dove, recorded by Marie-Lan Taÿ Pamart - Wireframe TernXC564600 · CC BY-SA 4.0
Arctic Tern, recorded by Doug Hynes - Bézier SwiftXC554033 · CC BY-SA 4.0
Common Swift, recorded by Luis Alvarez Menendez - Contrast RobinXC509375 · CC BY-SA 4.0
European Robin, recorded by Marie-Lan Taÿ Pamart - Grid SwallowXC83449 · CC BY-SA 3.0
Barn Swallow, recorded by Jonathon Jongsma - Token SparrowXC86749 · CC BY-SA 3.0
House Sparrow, recorded by Jonathon Jongsma - Prototype KiteXC518958 · CC BY-SA 4.0
Red Kite, recorded by Pascal Christe
Each clip is trimmed and noise-filtered, with a band filter, noise reduction and a level match. The Autolayout Heron has no call, as herons are mostly silent. The Calm Albatross’s breath of wind, the plane’s whoosh and the small clicks are synthesised in your browser. Sound is off unless you switch it on.