Tethering involves tying an animal to an anchor point for a prolonged period as a means of confinement. Due to the risks of tethering, it is not suitable as a means of long-term confinement.
The RSPCA is opposed to the tethering of birds because of the severe restrictions it places on movement.
Birds need to be given the freedom to move, access water and shelter, and engage in natural behaviours and mentally and physically stimulating activities (e.g., flight). Tethering involves animal welfare risks such as inability to engage in sufficient exercise, interact with companions, and escape climatic extremes and other hazards.
Where birds are kept in captivity, they should have access to a flight aviary or be given regular opportunities to fly in a safe environment.
In some states and territories of Australia, it is illegal to tether a bird – check with your local authority. Some jurisdictions make exemptions for birds of prey/raptors (e.g., eagles, falcons, hawks), despite evidence that tethering can be distressing for these animals [1].
This information is not legal advice. Seek advice from the relevant authority.
Reference
[1] Loeb J (2019) Birds of prey should not be tethered. The Veterinary Record 185: 5-5