Hello Jrsygrl and welcome to our family, sorry it took me so long to answer your thread.
You have already been given some good advice so I will answer your last question, if you cover your bird cage at night just use a flat sheet, I have black ones I use for this purpose, they are cheap and easy to clean so no need to buy those expensive covers they make, my greys cage is large so I use the king size sheet. I use newspaper on the bottom of the cages, it can be easily replaced with clean paper and you can observe the color and consistency of poops that way, of course all their cages have the grates in the bottom to keep them from getting to the paper.