1/birds/caspian-tern-hydroprogne-caspia/photos/19504/details?type=BirdPhoto/birds/caspian-tern-hydroprogne-caspia/photos/19504/photo_info_content?type=BirdPhotoEggs (from the private collection of Manassa Schrock) were collected by H. R. Eschenburg on 16 May 1936 in San Mateo County, California.
3/birds/caspian-tern-hydroprogne-caspia/photos/1701/details?type=BirdPhoto/birds/caspian-tern-hydroprogne-caspia/photos/1701/photo_info_content?type=BirdPhotoAdult in summer (July).