Becomes when the male is supposed to set up the nest and the female returns to look for the nest but if the nest is not up to par she leaves for another penguin. >> wow. all penguins look alike, don't they? >> they all have unique mating calls that they recognize, so that's how they're able to find each other. more than 70,000 pairs on that island. >> and you mentioned the legendary cape horn. you went there. >> extreme weather. they told us that between the late 1880s and early 1900s there were more than 800 shipwrecks, more than 10,000 people lost their lives so they were trying to sail arou...