Titanis

Titanis is a large extinct flightless carnivorous bird of the family Phorusrhacidae, endemic to North America during the Blancan stage of the Pliocene living 4.9—1.8 million years ago, and died out during the Gelasian Age of the earliest Pleistocene, existing approximately 3.1 million years.

It was 2.5 metres (8 ft 2 in) tall and weighed approximately 150 kilograms (330 lb), but with large variance (perhaps indicating strong sexual dimorphism). Though its head has not been found, it certainly would have been large, with a huge, axe-like beak, as in its relatives.

The wings were small and could not have been used for flight. The wing bones articulated in an unusual joint-like structure, suggesting the digits could flex to some degree. It also had a relatively rigid wrist, which would not have allowed the hand to fold back against the arm to the same degree as other birds.

Titanis in "Birdwitching"
The Titanis was one of the birds that Fred O'Neill magicked to Fernwood during a Yule Bird Count competition with Lucy Parker. O'Neill upped the stakes further by attracting the bird through a greater distance in time.

Lucy and Jesse Parker discovered this when John called them into the family room. There they saw on the news crystal an image of a bird that was taller than a man with chickeny feet, stubby wings and a hooked beak that looked as if it could bite through steel bars.