Bird Photography Gets the Eye
By Del Albright
Besides capturing feather detail, bird photography requires the bird's eye to capture the viewer. The eyeball must be in focus, and in a perfect world, looking at the camera. Now that makes a pic!
Even a flying bird is more interesting with the eye in focus.
Tripods are a crucial tool for birds on limbs and such. Flying birds just require a good solid hold, possibly a mono-pod and patience. Try to have the bird flying into the frame, or the bush bird looking towards the camera or into the frame.
Practice makes perfect. Keep shooting until you figure out what works for you.