I got up this morning and rushed over to uncover Truman's cage to get him out before he drops a big poop. I try to get him onto his training perch (which has a newspaper underneath) to poop because that saves me all the effort of cleaning the grate out. Well I put him on the perch and he sat around for 5 minutes doing nothing. Then he randomly decided to fly off and landed on my window shades. Then he decided to let out everything he'd been holding in all night! It cascaded down the vertical blinds like a slow water fall and managed to leave a trail down every single shade. To make it worse it made its way down the shades and onto the sill and wall below and eventually to the floor. I spent all morning cleaning bird crap out of my window blinds and had to wipe each vertical insert individually.
Here is just one more reason NOT to get a parrot. If you're not ready to handle something like this, then don't get one. This is not a pro-clipping statement, however. Clipped birds drop poop in bad places no less. So if you cannot handle a pet that poops in places you don't want, then the answer is not clipping but rather not getting one all together.