So I have 2 Macaws, I also am fostering 2 lovebirds. I work with a parrot rescue group and have my 2 babies plus some transients until they get a new home. What I am curious about is how they are able to make up to about 135 decibels in noise, they at best weigh 3 lbs. Humans can only get up to 100 decibels on a good day and we all weigh a hell of a lot more. What makes these tiny creatures so loud?