While it’s received a warm reception, not everyone is excited about the Natural History Museum of Los Angeles County’s new Otis Booth Pavilion. The problem with the 67-foot-tall glass cube, said geographer Travis Longcore, is that it presents a fatal obstacle to the birds that the museum’s new gardens are meant to attract. As Longcore, who is an associate professor at USC as well as science director of The Urban Wildlands Group, explains, birds don’t understand architecture the way humans do. We avoid glass by attending to architectural cues, including doorways and lintels. Birds mistake glass for open air or the habitat it reflects, and often try to fly through it.