Well, you are the bird nut of the family! Your father still has quite a lot to learn!
Depending upon the time of year, my birds may go to sleep around 4-9pm in the evenings and wake up between 6 and 7am. That means that they get 9-15 hours of sleep - depending upon the time of the year.
Birds can, however, adjust to our sleep schedules if we allow them! If the bird doesn't seem cranky with less hours of sleep, they'll probably do fine! Although I feel as if they should get at least 8 hrs minimum. Jester is pretty new to your family, so you and your family still have a lot to learn about him and what he is or is not comfortable with!