What's Wrong With This Picture? The Problem of a Dam in Del Puerto
What is wrong with this picture?
This is a map of all the historical sightings of Red-tailed Hawks on eBird in a portion of the Diablo Range between the Bay Area and the Central Valley. The Red-tail is a common bird that lives in a wide variety of habitats, ranging from coastal areas to mountains to savannas. So why, except for a single east-west line across the center of the picture, have
Del Puerto Canyon