thats rich cronk(a premier caller) doing a rabbit distress call with his mouth.the best way i can put this is,how many of us can call turkeys with our mouth,with no diaphram??not to many.some people have the nack for using there mouth for calling wildlife,most of us have to resort to using reeds or latex to make the calls.the lip squeek is just what it says,a squeek.just kiss your hand and make a short,soft squeek.