Tudge, Colin (2009) The Bird:A Natural History of Who Birds Are, Where They Came From, and How They Live  Rahonavis was a small predator, at about 70 cms long, Holtz, Thomas R. Jr. (2008) Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages Supplementary Information with the typical Velociraptor-like raised sickle claw on the second toe.