A woman in Florida says she and her family saw a big-sized bird she believed to be a pterosaur.

The 42-year-old woman, a registered nurse who provided a full name and contact information but asked to remain anonymous, says she and her family where in their backyard in Apopka when the unidentified creature showed up earlier this month.

“My mom and my aunt saw it standing on the ground,” she told Cryptozoology News about the day time encounter. “It noticed them and then it went hiding in the shadows.”

The eyewitness describes it as a big pterodactyl-looking winged creature.

“It had massive shoulders and protruding as it moved,” she said.

Thunderbird, also known as Roc, is the nomenclature used by Native Americans to refer to bird-like creatures with reptile features that are believed to be related to the extinct pterosaurs.

Two species of vultures inhabit the Sunshine State, the turkey vulture and the black vulture.