Gray Gull (Leucophaeus modestus) The Gray Gull is one of the most common species on the Pacific Coast influenced by the Humboldt Current. For years it was a mystery as to where this species bred. They were seen copulating on the coast, vocalizing and displaying, but no nests were found. Given the many thousands present on shore it was a paradox... - http://dendroica.tumblr.com/post...