Rocky Mountain News: Too little snow to track elk; water too warm for trout’s liking; birds at higher elevations than they were a decade ago. Global warming is real enough to Colorado’s anglers and hunters that they’ve embraced an idea by an environmental group to hold workshops on how to deal with changing and dwindling habitat where they hunt and fish. “Wildlife at a Crossroads: Conserving Colorado’s Wildlife Heritage and Promoting a New Energy Future” is holding workshops Thursday in Denver, …