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Blue-Winged Olives: Colorado's First Sign of Spring

April 12, 2009 By: Marshall Cutchin

“This tough little bug also has the punch to produce two separate broods each year; rare among mayflies, it yields a second hatch almost precisely six months later, in late September and October — just in case we didn’t have enough fun first time around. ” The Denver Post‘s Charlie Meyers says the time is right for BWOs in Colorado.