Stop reading if this is already more information than you need! If, however, you feel there should be no boundary to your quest for hawk knowledge, then read on as John Blakeman tells us everything we need to know about hawk excretion.
"Watching the eyasses for any length of time reveals their remarkable feats of defecation. They lift their little tails and in an instant squirt out a white blob of feces with remarkable velocity. And it will be noted that they (generally at least) take aim toward the edge of the nest so as not to soil its center.
Let’s get the terms of all of this correct. When a hawk (but not a falcon – later) defecates, she is said to have "sliced," whether an eyass or haggard. The slicing of the little eyasses seems pretty muscular, but doesn’t compare with the fecal ejections of the haggards, who can propel a stream of feces horizontally off the nest many feet.