They look like pterodactyls!
Flock of little black shags flying along the shoreline.
This bird struck me as smaller than a typical Double-crested Cormorant in the field, possibly with a longer tail than Double-crested, suggesting a Neotropic. It was high-flying and made a circle as it continued on. Double-crested is the default cormorant species in San Diego County, but the first county record of Neotropic occurred in 2014, and they are on the increase around the Salton Sea in nearby Imperial County. Photo 1 of 3.
The order Suliformes (dubbed "Phalacrocoraciformes" by Christidis & Boles 2008) is a proposed order by the International Ornithologist's Union. In regards to the recent evidence that the traditional Pelecaniformes is polyphyletic, it has been suggested that the group be split up to reflect the true evolutionary relationships.