Thanks Fred. That sort of helped, but I'm still confused.

I'm also not really familiar with what most people imprint. Obviously accipiters, and some falcons. Do folks imprint Harris hawks?

Obviously individual personalities play a big role, but what about species? Is one more likely to hand feed an accipiter than a falcon? Why?

It seems like sometimes it works okay, and sometimes it doesn't. What is the difference in hand feeding that makes one bird great and another a screamer?