the powder river area in montana and north dakota and south dakota had a bad outbreak of EHD or blue tongue the last 2 years on top of 2 bad winters. The combination of the 2 knocked out most of south dakota and north dakota's antelope herd and took a pounding on the deer. They wrote an article about it in bowhunter mag a couple of months ago. I live in south dakota, 8 miles from the north dakota border, just west of the missouri river and didnt see much for deer at all last year and hardly any antelope but this year they both seem to be coming back, whitetails way more than antelope.