Have a new burrow, would like advice on keeping him happy and healthy, and quiet?

Today, an subcontractor that works for me from time to time, convinced me to adopt a burrow/donkey he had. He bought 60 acres of pasture land a couple years ago and the donkey was left behind by the previous landowner.

I have miniature horse already, a mare, this donkey is male but neither of us knew if he is intact. How would you be able to tell?

what kinda things make these burrows heehaw? i want to eliminate as much noise as i can.

what makes a donkey happy? this will be first experience around these animals, plenty of time around all kinds of horses but no burrows. I will of course do the normal things, regular brushing, hoof cleaning, mane and tail work, treats, etc.

I will have a vet or farrier swing by this week to give him a once over and he looks like he could use some worm meds.

thanks in advance