Law (WFVZ), small numbers nested successfully as late as 1925 (Bird-Lore 27:273).
Howsley, described in his journals (WFVZ) as being "3/4 mi east of Del Rey Hills Calif.
1923 (WFVZ), and adults accompanied by young were present here the next year on 27 July (Bird-Lore 26:347), making the last year of known nesting 1924 (contra Willett 1933).
Von Bloeker (1943) considered the Marsh Wren a breeder "in tule patches, along edges of ponds and sloughs from April to June;" egg sets extend to 1936 (10 May at Venice, WFVZ).
Von Blocker (1943) termed this species a "common resident, nesting in the willows of the salt marsh and along Ballona Creek chiefly in May and June." Numerous egg sets were collected in willows in the Ballona Valley during April and May from 1934 to 1936 (WFVZ).
Many of these islands may have had easier access to puffin nest sites, although breeding in the San Juan Islands was not otherwise documented until eggs (UWBM #03606; WFVZ #117,982) were collected at Sucia Island in 1886 (Speich and Wahl 1989).
Digital photographs of eggs and egg slips or other specimen information also were provided by NHM, RBCM, and WFVZ, as well as M Gosselin (Canadian Museum of Nature [CMN], Gatineau, QC), C Angle (US National Museum [USNM], Smithsonian Institution, Washington, DC), and M Lowe (University Museum of Zoology Cambridge [UMZC], Cambridge, UK).