Last fall there were several people standing around a small prairie king on the front lawn at work. It was about a foot long and big around as a pencil. You would have thought it was a monster rattlesnake. Is it normal for them to darken as they grow? Not only is it darker on it's back and sides but also on it's belly. The belly scales are nearly all black or dark brown. There are very few white scales on the belly.
I have checked my field guide and took him to a couple of people for identification. I have a pretty high level of confidence he is a prairie king and not a rat snake. None of the larger prairie kings found in my neighborhood are this dark and not on their belly.
What are your thoughts?
Mike B

