Symbiotic relationship between Eastern Screech Owls and Blind Snakes
All prey that is brought to the nest of an Eastern Screech Owl is dead, except for the Blind Snake. Sometimes these snakes are eaten, but more often they begin to live in the nest. These snakes survive off of larvae that is contained in the fecal matter that sits within the nest. Not only does this reduce the risk of parasitism for the nestlings, and reduces the competition with larvae for food as well. Nestlings with live-in blind snakes have a much lower mortality rate.