This is all great info. I was able to walk up on a bull moose once, to about twenty yards,by making a "Glunking" type noise, when they are in the rut. Unfortunately, I didn't have a Moose tag, but I did have my rifle ready, in case he got silly, I had seen this on TV with a Wildlife Biologist and his assistant, in Vermont, or Maine. I read in one of the outdoor magazines years ago, about a guy who was hunting in Central America, and one of the Indians there showed him how to get close to deer. He said there was a deer in a clearing, feeding, about 100 yd.s away. So the Indian waited till the deer put his head down, and started feeding again, and started silently walking towards the deer, then he would stop, and the deer would look up and around, and then go back to feeding. The Indian, and deer would repeat this bit, till finally the Indian was within about 10-15 ft. from the deer. Then when the deer put his head down again, the Indian reached down and picked up a rock, and hit the deer with it, which then bounded away. He told the guy, that deer will feed for about ten seconds, and then look up for about 2 -3 seconds or so, and then go back to feeding. If you are down wind, and walk slowly and quietly, for about eight seconds, and then stand still, the deer will look up and at you and around and then go back to feeding. I tried this down in the big Cypress Swamp area, where we had a Cabin. I saw a doe and fawn, this was in the Spring or so, and the fawn was still covered in spots. Well they were about 70 some yards or so, and I told my buddy, to watch. So I waited till their heads were down, and did the stalk. I was about 40 yd.s or so, or might have been closer, it was along time ago, but I remember I was amazed at how close I was able to get. But at about that distance from them before I could get any closer, Jr. looked up out of sequence, saw me take a step, and told Mama! She looked right at me, not around as to see what the kid was talking about, but right at me! Finally after doing the head turn and foot stomping, she finally relaxed, and went back to eating, but not the little brat! finally I just started running towards them, making monster noises, (OK acting and looking like a lunatic) they took off, while the kid was saying, "See Ma, I told ya there was booger over there!" But it worked great till Jr. didn't keep his head down long enough. There is also the use of card board, or door skin wood cut outs, of cows, that are painted in the type that are in the area, if there are any, and you just put a small frame on the back and walk at an angle to the deer, stopping periodically, as a cow would, and don't be in any particular hurry. I have thought about making one of these with a swivel pin for the neck, so I could lower the head and neck as if it were feeding. Maybe even pull up some grass for the sound effect. There was an article that just used a sheet of light ply wood or door skin (Luan mahogany) with a light frame on the back so the front was at an angle to the ground, and then covered the front with Mylar so that it reflected the ground. So from the deer, or antelope's view, it looked like just ground. Drawback,...... you can't use it with the sun in front of you.
Wayne