If you notice any signs or symptoms of illness in the new bird, bring it to an avian vet immediately. You can work on taming this new bird during the quarantine period. To keep the all of your birds healthy during this time, always take care of the old bird before the new bird to prevent contamination.
If the birds show signs of stress, place the cages further apart from each other, rather than directly next to one another.
Do not hand the birds treats directly. If you want to give one or both of them treats, leave the treat on the floor or on a perch of the cage. Do interact with them in any way, including by talking to them or taking them out to teach them tricks. If other people in your household are also attached to the birds, they should stop seeing them as well.
