If your Parrot is showing problem behaviours such as feather plucking, screaming, aggression, had you considered if sleep deprivation might be a factor?
Getting a good nights sleep is just as important for Parrots as it is for people. And it's probably true that most Parrots need more sleep than we do - most Parrots are from equatorial regions which have a 12 hour night throughout the year.
But how can you accomplish that in a busy household where the TV is on till late and people need to get up early for work? Liz Wilson has some suggestions...