Hi All: Summer pelicans are equally impressive, from Bird Research NW group:
"7/22/09 Census of roosting California brown pelicans conducted on East Sand Island; 16,850 brown pelicans counted on island, the greatest number of brown pelicans ever recorded on East Sand Island by project personnel"

...that's alot of pelicans. Some engaged in nest building through Aug, but no eggs were reported. It would be too late to rear young in August, but with an earlier start, breeding is possible.
East Sand Island is the only 45 mi S of Grays Harbor in the Columbia River Estuary and is famous for the tern/salmon conflicts and looming pelican/salmon conflicts.
Gary Shugart, Slater Museum of Natural History, University of Puget Sound & Vashon Island