[Blarg]

Hey I'm with you on the comfort thing.

The question isn't whether the best possible parrot on his best day will have just enough of a margin to survive. It's whether your bird will survive, and whether your bird could also survive if it's in a weakened state for whatever reason -- fear, age, flu, who knows.

This isn't one of those things where you argue fine points of what ultimate survivability is. Especially if you have any care for or sympathy for your pet at all. You want him comfy and safe without question.

On the other hand, if your dad is suck a cheap f*ck that he doesn't give a sh*t if your bird dies, chip in on the power bill yourself or get a space heater or both.