Well, if you have permission from the land owner, you could put up a few PVC pipe traps and possibly catch a few when they are moving around during breeding season, and then pose them for photo's. My dad is a photographer, and he'd be appalled that I just told you that mind you, but aside from learning to climb (or fly) I don't see how you will get to them. I'd never heard of the PBTF, they are beautiful little buggers!