Southtexas36,
You imply that you have declining numbers of indigos; do you what the cause is?
Yes, it is my opinion that numbers are declining, based off of visual observations alone. I've been fortunate enough to hunt the same ranch for the last 30 years, so what I do know is habitat has not significantly changed over time. Our hog population is not a problem, we have a few, something is keeping them in check, they've pretty much gone unchanged in the last 15 years. Yes, we have a good supply of road-runners, but this has always been the case. Rodent and rabbit populations fluctuate, primarily based off of rainfall.
I have seen fewer and fewer Indigos over the last 15 years or so and at the same time, I'm starting to kill or see more and more rattlers. For years, we wouldn't even see a rattler, I was on this ranch for 10-15 years before I saw my first one.
These are my observations only, I am not at the ranch enough to make an educated guess on why they might be declining, this would take more time investment and research to come to some logical conclusion.
I don't know, has anyone else noticed the same?