I thought the little 1/4" hole in the end is what you blow into? How the heck to you make it work if you don't blow into the little hole?
Braz the big hole at the other end is where you blow the air.
The little hole is just there to confuse you. I may need to start plugging that hole to discourage confusion!
To get the mallard drake "dreeeeb" you exhale air from your diaphragm (like a normal duck call) and say the word "drrreeeet", drawing out the E's. Pintails and widgeons are done by also exhaling, but with a finger over the hole in the top of the whistle farthest from the toneboard. Pintails just involve rolling your tongue at the same time. You get teal calls without blocking any holes and by just blowing air, not exhaling from the diaphragm.
I really need to learn to do sound files.