got my macaw about a week and a half ago, and thought i was lucky and got a quiet macaw (if one existed). just tonight she started screaming her head off and has been going at it off and on for the last 30 minutes!

Is this really normal??? i havent heard anything this loud! my gf's cockatoo is quiet as a mouse 99.5% of the time.
Is there a way to reduce this behavior so she screams less?