Who Really Killed Cock Robin? Facts in Chapter 5: The Dump p. 95: An American toad trilled raucously and a male robin sang. Listen to the sound of an American toad and an American robin p. 96: Our next doomed species, the fabulous peregrine falcon. Peregrine falcons were, indeed, doomed at the time this book was written. Breeding birds were completely wiped out east of the Rocky Mountains. But thanks to the efforts of a wide group of ornithologists and falconers at a lot of universities and other institutions, peregrine falcons have been reintroduced to many areas in their former range, including cities, and are doing well today. This Season Teachers Kids Orientation Registration Search Copyright 1997-2009 Journey North. All Rights Reserved. Questions or comments? Contact us.