The Audubon society, reviewing the importance of birds in 2013, obtained statements from many people with differing perspectives. Among them, the society's science director, Gary Langham, noted that what is good for birds is also good for humans. The writer David Allen Sibley observed that birds bring a little wildness into parks and gardens. The writer Barbara Kingsolver noted that birds are part of life on earth. The actress Jane Alexander wrote "Birds remind us that there are angels." The forensic ornithologist Carla Dove noted that birds are biological indicators of habitat health, climate change, and the coming of spring.
