No really, I do! Not as well as my mother, but well enough to turn a peacock's head.
My mother grew up on a farm. They had peacocks. She learned how to mimic the sound close enough to fool a peacock. I learned this one day about 10 years ago when we were at a living history museum here in our city. They had peacocks and without warning my mother let loose with this horrendous, "HEEEEEEE-EEEEEEEELLLLLLLP!" I thought she had gone out of her ever-loving mind! Before I could say so, from the roof of an out building came a response, "HEEEEEEEE-EEEEEELLLLLLP!" My mother speaks peacock!
She gave me lessons. And now, much to the chagrin of my teen/tween children, I speak peacock!