I call the chickens and have treats behind the camera to get there attention (careful, cause speaking to them might get the neighbors attention too, if you're close enough ). Another tip is to make sure the background is clear. I've gotten pics where the bird looks perfect, but the background is so distracting it ruins the entire picture. Grassy or green backgrounds are the best (I've gotten to the point of moving the chickens to the other side of the yard where it's grassy). Also, as other people have said, take tons of pictures and go down at their level.
Some weird/bad pics:
Some weird/bad pics: