The belly can be light brown, salmon, pink or dark. The all have the bright shiny iridescence but the underside, head and tails vary in color as some of their names describe. Among those species are the Yellowtail, Orizaba, Mexican Redtail, Eastern Indigo, Unicolor, Blacktail, and Margarita Island. There are about 7 different known related species/subspecies in the genus of the Indigo – the Drymarchon, all scattered throughout the Americas, from the southern part of the US to South America. The iridescent colors in an undulating pattern are made by the lines of the scales where they meet and create an optical diffraction of the light. What these pictures can’t capture is how the snake has an amazing purple red (or indigo) glimmer in the sunlight. That’s nice but they probably still prefer not to be bitten if they can avoid it. They are immune to the rattlesnakes venom. This is an indigo snake dragging-off a rattlesnake to eat. They are non-venomous and they overpower their prey, sometimes swallowing them whole and alive. They are diurnal hunters and travel long distances in a day actively searching for prey. Indigo snakes feed on vertebrates, including fish, frogs, toads, lizards, snakes, birds and small mammals.
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