Keep you bird quiet. Keep the house quiet. Takes a bit to recover. Don't let them out for at least a couple of days after looking and acting normal. Put a towel on the bottom of the cage incase of falls. Your bird might go to the bottom of the cage for a couple of days, so be prepared to put food and water on the bottom of the cage. Use a very shallow water container like a lid so no drowning. Don't sit by the cage staring at them, you don't want more stress after the accident. Good luck. I once had a bad head injury in my bird, and at that time and in my specific account the vet told me not to bring the bird in, as the additional stress might kill her, and that all they would do ( which can be very Valuable) was to put them in a heated and oxygen rich cage. So if you can keep your house warmer for a few days might help.