~UPDATE #5~
After banging on the window a few days ago (tell me if I didn't mention it in a previous update), our Hostage, Pavlov Schrödinger, has only shown signs of hostility and aggression. I have not fed him in 3 days because of his behavior and him refusing to eat.
Today I've noticed that he has trouble walking on the window screen as well as picking himself up when he fell not too long ago. He is significantly smaller and weaker than when I fed him the first time, and still refuses to eat. I also observed him biting at the screen in a petty attempt to escape and attack the dropper full of water.
He will not eat, he cannot escape by biting the screen, he is too weak to fly for an extended period of time, and I know that he will attack me if I release him.
Pavlov Schrödinger's days are limited. What should I do?
Starve him (let him die)
Release him
Open the screen and put him into a container so I can closely monitor him and feed him