More to Bighorn die-offs than disease presence

[Nanno]

Very interesting article about Bighorn die-offs. Finally, one that admits there's more to the issue than mere exposure to pathogens.  

http://billingsgazette.com/lifestyles/recreation/study-looks-at-why-montana-s-bighorn-sheep-are-still/article_bf654ff2-13e9-53a8-b58e-f05dbb8c27a8.html