Whose baby is this?

Fluffy fledgling. (Courtesy of Richard and Arlene Pearce)
Fluffy fledgling.
(Courtesy of Richard and Arlene Pearce)

A hint:  Adult versions of this bird have dark brown feathers.  They have an incredible sense of smell.  Their call sounds like the heavy breathing of Darth Vader with a cold.   In the hill country, they are often seen circling and soaring high overhead.

Answer found at this link.