The great transition in understanding the meaning of words and just responding to words.
For sleep he will fly to the floor and request step-up. He will position himself facing me if he is not ready. When ready, he will face away from me, which signals that it lights-out and the door closed!
Understanding verses just responding, said well.
Julio has an impressive and definitive method for calling it a day.
Meisha's version for a step-up request is to step-up on our foot. One of her responses to a command request to get of the floor is to perform her step-up request.
Meisha understood and minimally complied! How could you possibly fault her impeccable logic?! 
Epitome of understanding:
Gabby has a humorous evening routine pretend eats, playtime with favorite toy, splash around, messing with her plastic chain.
Once I turn off the lights... instantly compliant.
Impeccable logic indeed, which we encourage and treasure.
Gabby has the wind down figured out.
We have a definitive routine on Meisha's meals. They are served in three courses. She is confined to her cage when eating as she has a tendency to come out before completing a course. When she has completed a course, she doesn't rain-forest scream. She simply says hi. The reflected completion of the last course is followed with me closing it out. It is also a signal to me she wants access, her cage opened with the overhead perches positioned.
About that pretend business, we have a measure to enhance Meisha's water intake. Starts with telling her she looks thirsty, that she should hydrate. Followed with request she should get a drink, "three scoops please." When she falls short, we follow with "that was only two, one more please." She also fakes it, pretending to scoop water, but doesn't, to which we reply, "no faking." The hydration management is particularly useful in getting her to tank-up before a warm weather speed-walk.