When a lush tree canopy has been restored to Colgan Creek, you can look for the presence of many birds.


In the lowest part of the trees, called the understory, look for a songbird called common yellowthroat; in the midstory, where foliage is thickest, look for the belted kingfisher; in a tree-trunk cavity, for a pair of nesting Nutalls woodpeckers; and in the topmost branches, the canopy, for osprey and red-shouldered hawk.















Creek = Corridor Animals need the creek to walk, feed, drink, flee or migrate. A creek should provide connectivity for animals—a safe and unbroken habitat pathway from one place to another. For animals, lush creeks are a corridor connecting them to food, water and cover as they hunt, hide and protect their off-spring. A fox would have a hard time hiding, hunting or raising kits along Santa Rosa Avenue.



CCG_15_foxLearn how land use and climate change are shifting the distribution of plants and other organisms in our region: Terrestrial Biodiversity and Climate Change Collaborative (TBC3) for the San Francisco Bay Area.