yes if you want him to leave do not feed him and let him out the garage they need to be outside.

But honestly peacocks are awesome ours turned up several years back now hes basically a free range family pet. Hes perfectly capable of looking after himself so keep him out of your house and just leave him to it he should be fine outside they are very good at climbing trees to sleep in at night and avoid predators.

Also hes likely shiting everywhere because you fed him to much, if you give them food they will just eat and shit out the excess if you do feed them only give them tiny amounts.

p.s just looked at the picture and its a female you have there.