I'll take your advice! I'm just worried because my neighbor has a huge Pit Bull next door in his yard and he is not a friendly one! If any of my chickens hop over that fence, he's getting a luxurious dinner! Also I have trees they can jump on to get over there but once they are over there I'm not sure if there is anything for them to jump on back ): My neighbors are also mean.. they'd kill any chicken on sight just to spite me, I bet! But the predator thing does concern me. I guess I will just have to wait and see!
I would worry more about the mean dog breaking into the yard than the chickens going into the yard with the mean dog. My chickens seem to be very aware of anything outside of the fence even before I'm aware of it. I have even seen them scatter because of a blue Jay that flew in unexpectedly.