I tried to do optical trick as mention in Y. Perelman book(s) 'Physics for Entertainment' with this photo : close one eye, and see the photo with one eye only, then you feel likely see a 3D photo (with feeling the "deepness" of the photo).
The result (is depend on the distance between eyes and picture corresponds with the focal length, as the book has said as I remember) is excellent (at least, with me)
"Dude, where are you, I can't see you!" "I can't see you either! But judging by your voice we can't be too far away!" "Alright, just follow my voice then, we're bound to come across each other eventually!" "Great idea! Dude, you're so smart!"
Probably the longest comment I posted under any of your photos This photo should be named "Stoned Cranes" Look how red their eyes are! XD