Why is my Blue Front Amazon, suddenly so antisocial?

by Tara Ong
(Turners Falls, Ma. U.S.)

I have a Blue Front Amazon, she is about 16 years old, my mom has had her since she was a young lil' thing, and about 2 years ago I adopted her, from my mom, because I wanted to keep her in the family.

The concern is recently she started staying (sleeping) on the bottom of her cage, which she has done in the past, but she has now been there for about 2 weeks, only getting up to eat and drink from her dishes placed higher in the cage.

Before she started this I would let her play about the outside of her cage, (she has her own space in the house) and she would be out for hours on end and if she ever got bored she would climb her perch and sleep, now she may come out for a breif petting, but then retreat back to the bottom of her cage.

I also have put cardboard boxes in her cage before, for her to (destroy), I would cut windows and door holes, in which she would eventually expand by ripping the box, I figured since she was spending so much time in her cage I would put a new box in there.. and she has not ripped one peice, instead it has become her new home.

Could my parrot be showing signs of laying an egg? If so, how long will it be before she does? And what should I do with it, once she has layed one? My mother said it could be possible, but I donno, she has been so incredibly antisocial, which is not like her..

Please help I am worried my parrot may be sick. P.s. she has..not.. pucked any of her feathers)Thankyou for your time and concideration toward this matter!