I watched it! I love ducks, amazing!
Here's my question, was it the Artic Goldeneye they showed when the narrator talked about the circulatory systems, that we already knew about, thanks to Miss Lydia? So I think the narrator stated that a Duck's temperature is always 105'F, no matter the weather?
For those who have yet to see this (fabulous, by the way) Google nature online. They have online viewing available. My favorite part... Online viewing for mobile viewing as well.