Here's an experimental video of a a red-bellied woodpecker (and some red-winged blackbirds) I took using my iPhone 4s and my Swarovski Spotting Scope. I'm using my 25 - 50 zoom eyepiece on this one and I did do a wee bit of cropping to take out a small amount of vignetting. http://youtu.be/qwh6nhE9FdY