Quote:
Originally Posted by Cloudkicker
Before reading any of the comments, first thing it that came to mind was Drymarchon couperi... From what I have read, they can range up into Tennessee from Georgia.
Either way, it really doesn't look like a Racer or a Black Rat. The head scales are way too indigo looking.
EDIT: Dug up some scale count papers on Northern Black Rats... seems to fit better for this picture than Drymarchon... so I guess, like most others are saying, this IS actually a black rat lol.
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It is not a black rat snake, for reasons already addressed. Please read the thread again.
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While I wouldn't completely rule out
Drymarchon couperi, there are several factors that do not favor this candidate:
1.)
Range - while yes, some list (possibly erroneously...see previous comments about the inaccuracy of field guide distribution maps) the eastern indigo has being found that far north, obviously, this would be in on the outer fringes of their more common stomping grounds in Georgia, Florida, and along the gulf coast. Not to mention their status as endangered species, this would mean finding one in TN would be a very rare and noteworthy occurence.
2.)
Rarity - As mentioned before, this is an endangered species. Even in the "heart" of its natural range, it is not a common species to encounter.
3.)
Body shape - The snake in the photograph is rather slender for a healthy Drymarchon sp. Anyone who has seen one or worked with them knows what I'm talking about. If you were to take a skinny indigo by cross-section, you would find a more triangular shape, not a round one, like the snake pictured.
4.)
Scales - Yes, both racers and indigos have smooth scales, but anyone who has actually seen an indigo in person can attest to the superior "glossiness" of their scalation. Black racers simply cannot compare.
See the photos below for comparison:
Eastern indigo snake
Black Racer
When one takes into account all those factors, the most likely candidate is a black racer.