Im new to bird photography so I dont know any of the rules but heres a few recent shots with the 300 f/4. This is as close as an Egret has ever let me get.Im about 40 yards off here.Boy these birds have keen eye sight! I think this is a wigeon not possitive. I liked the way the Heron blends into it surroundings on this one. Question? What are the hard and fast rules for wing blurr or are there any? Based on my VERY limited experience Im guessing there has to be some kind of allowance compared to other types of photography.