Free Online Bird Identification Course For Beginners. In this free course I will be going through the basic steps required for the Bird ... ... <看更多>

Mar 21, 2014 - This post is a short one. I'd just like to share with you an online ornithology course I found recently. The free course is in the form of... ... <看更多>

Cornell Lab of Ornithology, profile picture · Cornell Lab of Ornithology ... These self-paced, online courses offer something for every bird enthusiast. ... <看更多>