These were shot with a Nikon D800 with a 70-200 2.8 lens that has a 1.4 extender on it. It helps that my blind is only 10-15 feet away from them. They do hear the shutter going off most of the time, but don't know what it is. The best part is when you get 10 plus drakes and only 1 or 2 hens around. The start fighting so much that they don't even care I am right there. This is what you do with all you surplus corn you grow in the fall...You feed it back to them and make them work for it.