Anyway, Chloe further explains (and I thought she was a psychologist, not an anthropologist) that it was supposed to be a myth until people saw it carrying off animals. Lockhart adds, "And children." Chloe says that some people think it migrates, and Derek adds, "Every thirty years." Derek asks why the sheriff doesn't believe it, and Lockhart says that the sheriff believes what he must "to keep from going crazy." Derek offers to help Lockhart find the Thunderbird (the mythical creature, not the Ford), but Lockhart says it's his kill. Derek doesn't want to kill it, and Lockhart says he'd be a fool not to, because "that thing's been sleeping for a long time," and "it's gonna want to eat," and Lockhart intends "to give it indigestion." He waves a pack of dynamite during this last part, to show us just how he intends to give it indigestion. Got it.
Lan calls on the cell phone. Never you mind that earlier they couldn't get a signal in the woods. That doesn't matter. Lan tells Derek that there were no teeth marks on the severed arm, meaning it was "a single, narrow, crushing bite." She compares it to what fish look like after being bitten in half by pelicans. Derek argues about various types of birds, but Lan continues to forward the pelican theory. Derek's eyes widen more than usual, as he asks Lan to send him a picture. Cut to Derek narrating into the computer that he "knew what this thing was, and you do too if you're a true freaker. We've all seen the picture." Please let me never, in life, meet anyone who refers to him or herself as "a freaker." It would be too sad, and I couldn't go on.