In the four and a half years I have been in Utah I have seen and photographed four escaped falconry birds, one in 2009, two in 2012 and yesterday I photographed another one, an escaped White Gyrfalcon.
Throughout these three experiences in finding escaped falconry birds what I have learned is that falconry is for experts not for people who just think it is cool to have a pet raptor.
I know that falconry birds and rehabbed raptors can be used as excellent tools in educating the public, I've been impressed with them myself. But there is a risk for falconry birds that escape and that still have jesses or anklets attached and that fact worries me.