Nathan Pieplow, who wrote the Peterson Field Guide to Bird Sounds (with separate volumes for western and eastern North America), will discuss how to differentiate the Common Raven from the Chihuahuan Raven, including “why we might be doing a lousy job of it.” Pieplow says that David Sibley recently proposed that at least half, and maybe up to 90%, of photos submitted to eBird from Colorado as Chihuahuan Ravens might be Common Ravens. “If this is true,” Pieplow adds, “then the conventional wisdom on raven status, distribution and identification needs some serious revision.” Since both Common and Chihuahuan Ravens have been reported in our area, the information might be a valuable way to strengthen the quality of our observations.

Full details and the link to register for this online event can be found here.