In 2004 a witness referred to as Danielle B. of Aztec, New Mexico, was sitting in Hart Canyon, when she beheld a monstrous flying insect, which she took at first for a small helicopter. Clutched in its limbs was a calf. It dropped its burden on a mountainside, then descended and gorged itself on the remains of its victim. Danielle told her story to investigator Nick Redfern three years later.
It may be relevant that a story of a crashed UFO is attached to Aztec.
Source: N. Redfern The Alien Book (Visible Ink)