Okay, I'm displaying my ignorance here but how exactly do you check a duck's pubic bones for flexibility and spread. When they say to lay your fingers on top of the bones do they mean you should spread the bones apart to see how many fingers will fit or will the bones just be the two or three fingers apart without being spread. I can tell that the bones are flexible on a couple of my girls. I do realize that this is just external palpation. Hope I explained my question well enough to make sense to someone!