It turns out crocodiles are even more skilled at hunting than previously thought.

New research published by an assistant professor at the University of Tennessee shows crocodiles and alligators use twigs and sticks to lure birds, particularly during nest-building times.

Researchers say the crocodiles position twigs on their snouts, then wait for a bird to come by. When the birds try to grab the sticks, the crocodiles strike.

It's the first report of tool use by any reptiles, and the first known case of predators luring prey based on seasonal behaviors.

Researchers says the observations could shed light on how dinosaurs once behaved.