hi can any one help i have a blue/gold macaw we are told he is 5 yr old i seen him in a pet store looking rough and not very happy

so i baught him as i have been after a macaw since my dad had one when i was little any way i had him just under a year now i can handle him very well

but his wings are not clipped and i want to take him outside when we in the garden and was thinking of a harness, could anyone please recomend a harness for him thank you