This tape sticks really good like a good tape should. i use it to tape boxes and other things like small children to each other. I have not used it to tape ducks as the little blurby thing about what the tape is tells us to do but I would assume that would be a very wet and feathery proposition. Whether it is heavy duty or not is also questionable. I am sure someone like Arnold or other muscly dudes could break it if they really tried. If it is really heavy duty it shouldn't have duck in the product description more like ostrich. It sticks good though unless you put it underwater then not so good. I think that is over four hundred characters. Who's counting?