COSF Contributes another $2500 to the wildlife crossing of the 101 Freeway at Liberty Canyon

Most of us think of the wildlife crossing as only for the benefit of mountain lions, so that lions from different regions can mingle, reduce interbreeding and strengthen the gene pool of the population. In reality, the wildlife bridge will benefit many more species, including plants and birds! COSF is Read more…

Watch the recording of the talk: Changes in Bird Populations due to Urbanization over 25 Years

Dr. Daniel Cooper, who spoke to us via Zoom on Thursday evening June 10th, gave a scholarly presentation of his research into the changes of bird populations over the past few decades due to expanding urban areas. He finds that some species thrive in cities, some avoid them, and others Read more…