Wait one moment folks!!
Those outside New York City Birds have added a much thicker underlayment of downy feathers than the Parrot in the Tampa area.
When we play with temperature, it is important to transition the Parrot over-time to allow them the physical time to increase their downy layer commonly over several months.
Here in the Great White North, our Amazon will begin adding downy feathers starting in early October as temperature begin to fall and continue to add even now.
Sorry to be hard, but bringing your Parrot into the comforts of your home is what you should want to do, yes?
Wes, you are in a very different position, as you are reducing temperature in your home. Commonly, when your Amazons are active during the day it can be. a bit cooler. You also use heat plates, so use them as your guide. The more time in front of the plates the more time that is need at that temperature prior to dropping more. Rapid drops is what is the concern as it commonly can cause drafts and cold areas. Check the location of your heating system. That area nearest the furnace commonly gets the warmest air for the longest time and will be a degree or two warmer than other parts of your home.