Ichnology is the study of animal traces—commonly tracks, but also anything else that organisms leave behind in their activities (for example, burrows, nests, scat, feeding remnants, or territory markers). It is often far easier to discover an animal’s presence through tracks than direct visual sighting, especially for shy or nocturnal mammals. “An animal can only be in one place at a time, its tracks can be everywhere,” one of my environmental science professors sometimes remarked in support of this principle. Indeed, around Emory’s campus (Atlanta, Georgia) I found tracks on stream banks that belonged to animals I had never actually clapped eyes on in the flesh. Prized among those were a  Continue reading →