Sound Credits & Licences

Burbz Quest

bgm-burbz-quest-v2.mp3 is the original two-minute instrumental Burbz Quest, generated with ElevenLabs on 26 July 2026 for the game's crossfaded background-music loop. It replaces the original one-minute bgm-birbs-quest.mp3 runtime track, which remains in the pack for provenance.

Bespoke Burbz sound design

ambience-empire-treetops.mp3 and the twelve sfx-*.mp3 files were generated specifically for Burbz with ElevenLabs on 26 July 2026. They form a warm woodland palette of polished wood, parchment, feathers, wind magic, restrained chimes, battle feedback, rewards, and a seamless Empire-view treetop ambience.

Their use remains subject to the Burbz project owner's ElevenLabs account and applicable service terms.

Legacy medieval UI and reward sounds

ui-book, ui-lock, ui-coins, ui-wood, ui-metal, and ui-spell are adapted from 80 CC0 RPG SFX by rubberduck. Source · CC0 1.0.

reward-level-up is adapted from Rise03 in the Level Up sound pack by WobbleBoxx Workshop. Source · CC0 1.0. These files are retained as legacy assets and are no longer the default interaction sounds.

Real bird recordings

Common Blackbird song (Turdus merula) by Diana Tudor, source recording, licensed under CC BY 4.0. Burbz excerpted 17.2–19.4 seconds, downmixed, filtered, normalized, faded, and re-encoded the clip.

Tawny owl calling at night in Tuntorp, Brastad, Sweden by W.carter, source recording, licensed under CC BY 4.0. Burbz excerpted 69.7–71.9 seconds, downmixed, filtered, normalized, faded, and re-encoded the clip.

Bird sound identification

Powered by BirdNET. Sound scans are analysed on the Burbz server; the recogniser is selected at start-up.

BirdNET+ V3.0 by the K. Lisa Yang Center for Conservation Bioacoustics (Cornell Lab of Ornithology) and Chemnitz University of Technology powers Burbz's bird-sound suggestions. The model weights are licensed under CC BY-SA 4.0 and the source is MIT licensed. Burbz runs the published V3.0 preview 3.1 Global 11K weights unmodified for inference; species are narrowed by BirdNET Geomodel V3.0.2, also CC BY-SA 4.0. Burbz is a distinct application and is not endorsed by the BirdNET project. Cite: Kahl et al., 2021, BirdNET: A deep learning solution for avian diversity monitoring, Ecological Informatics 61:101236.

Perch 2.0 by Google Research — an alternative recogniser, model and weights licensed under the Apache License 2.0. ONNX conversion via the Kitzes Lab bioacoustics-model-zoo (MIT).

Earlier BirdNET models (V1.1–V2.4) are licensed CC BY-NC-SA 4.0 — NonCommercial — and are not used in this build.

No project endorses Burbz.