cbirds, a flock of birds in your terminal, for Debian, Ubuntu and their derivatives, on amd64 and arm64.
curl -fsSL https://clainstone.com/apt/cbirds.gpg | sudo tee /etc/apt/keyrings/cbirds.gpg >/dev/null echo "deb [signed-by=/etc/apt/keyrings/cbirds.gpg] https://clainstone.com/apt stable main" | sudo tee /etc/apt/sources.list.d/cbirds.list sudo apt update && sudo apt install cbirds
Remove it with sudo apt remove cbirds, and the repository with sudo rm /etc/apt/sources.list.d/cbirds.list /etc/apt/keyrings/cbirds.gpg.
Signing key: cbirds.asc, fingerprint 14C9 356B 6C33 9CDD 5E96 C875 E1F8 E445 46C1 D91D.