On winter mornings when I look out my window, I often see a gray squirrel clinging upside down to the post supporting my bird feeder, with his front paws in the tray, munching sunflower seeds. Sometimes, a much smaller red squirrel is perched on the opposite side of the feeder.
This brings to mind my studies of squirrels years ago and the differences between the two species. For my thesis in biology at Williams College, I conducted a field study of social behavior and organization in the eastern gray squirrel in a suburban area in Williamstown, Massachusetts. My first step was to live-trap and mark squirrels so I could identify individuals. » Continue Reading.