9-10 a.m.
Pair of ravens observed one canyon to the west, who soon moved across Runyan to station themselves in the yard of one very lucky residence that sits atop the Canyon. There they stayed in the foliage, vocalizing, leaving only once to fly around me after I had left my place watching them. They made warning noises from their cover at the overflights of a large hawk. Other ravens could be observed on occasion, traveling west. One overflew, gliding, in a straight line over Runyan to approximately Mt. Bell. This one and the pair in their cover exchanged vocalizations (not warning style?) Another was observed soaring over the Hollywood sign.
A glossary is much needed for vocalizations. Possibly for everything else. Soaring, for instance, is a sort of circular motion, as opposed to the very linear glide.