Adult, American Sparrow, Animal, Bay Area, Binocular, Biologist, Bird, California, Caucasian Appearance, Color Photograph, Cultural, Day, Emberizidae, Female, Horizontal, Kate Gentry, Least Concern, Lobos Dunes, Looking, North America, Nuttall's White-crowned Sparrow, One Person, Outdoors, Presidio, Research, Researcher, Researching, San Francisco, San Francisco Bay Area, Science, Scientist, Side View, Songbird, Sparrow, United States, United States of America, USA, Waist Up, Watching, White-crowned Sparrow, Wildlife, Woman, Young Adult, Zonotrichia leucophrys, Zonotrichia leucophrys nuttalli, Zonotrichia sp