I have never seen an alligator snapper Sunning itself on logs.
They are normally too large. A common snapper yes, I see them all the time. Sliders and painter turtles too. An Alligator snapper has three ridges in it's shell running front to back. and also has 2 ridges of "spikes" running down it's tail. And to answer some of the questions above,
Yes I am a land-owner with a spring fed swamp and 2 creeks on my property, Snappers, cottonmouths, no Gar, But we have grendles which are even nastier.
This area is left pristine, Just as it was when my family bought it.
I think that having an untouched piece of property that has been this way
for hundreds of years is an incredible thing! The residents of that swamp are what makes it fastinating and rare! It, in my opinion, is only good stewardship of my property to not Kill the unusual residents there.
It is not just everyone who can say Yes, I own Alligator snappers,
Grendles, Slider and painted turtles, beavers, muskrats, Grass Pickeral,
Yellow perch, Blue catfish, freshwater shrimp, One thing I honestly have not identified what it is yet and five of the rarest plants in the United States ! But I can say that because they all live in my swamp! It is going to stay that way too. But, You do as you wish with yours.