For the birds

"Architects must limit the amount and type of glass on the first three floors of a building, considered the most dangerous area for birds, to earn the LEED credit for bird-safe design. Only 15 percent of all glazed surfaces on the bottom floors can be clear glass; texture, color or opacity must be added to the remaining glass to reduce threats from transparency or reflections."

"Glass treatment must be applied to the exterior to be effective, Brand said."

"Protective screens and shutters also deter birds by minimizing a bird’s exposure to transparent or reflective glass."

"Architect Eric Jabaley of Dogwood Design Studio said more affordable solutions from window manufacturers are needed to make bird-friendly designs appealing. He said most of his clients request as many windows as possible and set strict project budgets."

http://luminanews.com/2014/11/for-the-birds/