I was sitting on my back porch and noticed a pretty pigeon in my yard. I watched it for a few minutes. It was walking around, pecking the ground. Then it would stop and look up and seemed to just be going around in circles. I went over to it and it let me get very close, but not close enough to grab it. It kept walking away from me. It tried to fly off but got only a few feet in the air before taking a nose dive. I caught it and put it in a cage. It almost acts dissoriented. It looks up and appears "Dizzy". I thought maybe it can't see but I know it can see me. It eats and drinks fine. But there is definantely something wrong with it. It has a band on one foot, but it's not numbered or anything, just a plain red band. Any Ideas?