First falcon successfully caught!
Notice that the search areas failed to overlap as I got zeroed in, and the actual falcon tree lay outside the green and (possibly) white search areas! (Looked like outside white when I used "pushpin" map marker, but "circle" map marker looks inside.)
Snoerr and I encountered each other while hunting this one... we had about 3 trees left to check in the "not in search area, but nearby" when I found it. Sorry, Snoerr!
Fourth falcon and DONE
This one initially seemed to be pointing me toward the same one that I'd caught an hour earlier, which made me wonder whether they actually reset. It ended up only about 600 coordinates away from the previous location.