Sources
Real bird media makes Syrinx useful. This page preserves the creator, source, and license information for public samples on this website. App recordings retain corresponding attribution in the app.
Website bird recordings
- European Robin (Erithacus rubecula): XC527484, recorded by Benoît Van Hecke, CC BY-SA 4.0. The website uses an excerpt prepared for listening practice.
- Common Blackbird (Turdus merula): XC815302, recorded by steve, CC BY-SA 4.0. The website uses an excerpt prepared for listening practice.
- Northern Cardinal (Cardinalis cardinalis): XC797998, recorded by steve, CC BY-SA 4.0. The website uses an excerpt prepared for listening practice.
The accompanying spectrograms were generated from these audio excerpts and are published under the same applicable share-alike terms.
Bird range data
The app’s Near You lesson uses a coarse on-device grid derived from BirdLife International and Handbook of the Birds of the World (2021) bird species distribution maps, used with permission. Range data describes mapped distribution and does not represent live sightings or guarantee that a species is present at a particular place or time. See BirdLife DataZone.
Species photos
- European Robin: “Erithacus rubecula with cocked head” by Francis C. Franklin, CC BY-SA 3.0. Resized and re-encoded as WebP.
- Common Blackbird: “Common Blackbird” by Andreas Trepte, CC BY-SA 2.5. Resized and re-encoded as WebP.
- Northern Cardinal: “Male northern cardinal in Central Park” by Rhododendrites, CC BY-SA 4.0. Resized and re-encoded as WebP.
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Anatomy illustrations
- Avian syrinx schematic: “Syrinx.jpg” by Uwe Gille, CC BY-SA 3.0. Re-encoded as WebP without visual modification; the adapted file is shared under the same license.
- Comparative hornbill syrinx plate: “Syrinx Bucerotidae.jpg” by F. E. Beddard, from The Structure and Classification of Birds (1898), public domain. Resized and re-encoded as WebP.
Educational references
The guide articles are original Syrinx editorial content informed by and linked to the Cornell Lab of Ornithology, the Royal Society for the Protection of Birds, the Natural History Museum in London, and Smithsonian's National Zoo. Source links appear at the end of each guide. No institution named there endorses Syrinx.
Product and brand assets
The paper collage uses the Eurasian Blue Tit, Common Blackbird, and Northern Cardinal cutouts from the Syrinx onboarding artwork. The website reuses the existing cutouts without changing their bird silhouettes.
Handwritten annotations use Caveat, by the Caveat Project Authors, under the SIL Open Font License 1.1. The font is served locally.
The Syrinx app icon, blue jay mascot, interface screenshots, and original promotional illustrations are Syrinx product assets. App Store screenshots show version 1.0; interface details may evolve in later releases.
Corrections
For a missing credit, licensing question, or source correction, email support@syrinxbirdsong.com.