I think because we've had such little rain, they seem to all be located in wet spots.
The only ones I've seen this year are totally against all previous data I've collected on the subjuct of hunting them.
Right now..... the ones I saw/shot, were only about 25-50 ft elevation above/in/on rivers. You know, where theres aton more "Green".
I think they have no choice but to stay low while there is a drought.
I.M.O.