I've hunted birds in about a dozen different states and just about every terrain feature there is. In my opinion, there always seems to be better populations in areas of a mountainous or foothill characteristic. Whether it be western Marriams or easterns in Missouri foothills or eastern Tn and surrounding states. It makes sense that there's a less likely chance of nests getting washed out in these area but I'm wondering if nest predators are also limited in these areas due to terrain features. I'm not sure if any research has been done on this but it definitely seems like this to be the case based off my personal experiences. Thoughts?