Studying Darwin can get a little repetitive, especially because of his image as the father of evolution. Once you begin to get past the "Darwin wrote about evolution" part of research there is some very interesting information Darwin published that is lesser known to many. Darwin was particularly interested in birds and related many of their behaviors to sexual selection, and often to people's dismay linked bird behavior to human behavior. Darwin noted the natural plumage of male peacocks and the natural coy behavior of the female peacock and theorized that through this behavior, which is observable in the natural world, scientists would begin to understand how humans display the behaviors of sexual selection. Just for fun I looked up a few videos on other bird mating rituals to get a better understanding of how Darwin could study this subject so intensively, and I think with these videos it is easy to understand why.
Mary