I'd have thought I was watching a short-eared owl hunting if I didn't know our birds of prey fairly well. Their methods are similar and northern harriers have a pretty flat, owlish face for a hawk. They seem to really like Lopez Canyon which connects to our canyon and don't appear to be as bothered by the established invasive mustard as I am. An enormous striped skunk was foraging busily nearby and the hawk did take a brief look, but who in their right mind would tackle that?!
Los Peñasquitos Canyon Preserve art