Under Darwin’s theory, some 1 billion birds across the nation just aren’t fit for city life.

But being the highly evolved species that we are, San Francisco planners are considering new bird-safe building standards that would significantly curb the number of fowl killed every year by flying into buildings.

Planners claim that many of these deaths are preventable, using methods including window treatments, lighting design and lighting operation. This week, planners will present a three-pronged approach to curbing bird vs. building deaths.

While the program would be voluntary, it seems planners are also considering requirements for the most hazardous conditions and high-risk structures.

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