HEERMANN'S GULL

HEERMANN'S GULL (Larus heermanni)


HEERMANN'S GULL (Larus heermanni)


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FARALLON ISLANDS
ISLAND COLLECTOR INSTITUTION DATE NUMBER SPECIMEN
Farallon Islands Ferdinand Gruber MCZ January 1, 1875 MCZ-101159 Larus heermanni Birds


SAN CLEMENTE ISLAND

1907 San Clemente Island:Larus heermanni. Heerman Gull. Abundant everywhere. Those observed in October were in winter plumage, gray heads; while those noted during December, January and February were all in summer plumage, snowy white heads. Examination showed the crops of many specimens to be filled with shrimps, obtained from the kelp fields 50 to 300 yards off shore.” [“Visits were made to Clemente in January, February, March, April and October, 1907.”]
Linton, C. B. Notes from San Clemente Island The Condor 10:82-86, March 1908


ISLAND COLLECTOR INSTITUTION DATE NUMBER SPECIMEN
San Clemente Island J. G. Cooper MVZ July 7, 1863 MVZ-4419 Larus heermanni Birds
San Clemente Island C. B. Linton UMMZ January 24, 1907 UMMZ-124574 Larus heermani Birds
San Clemente Island C. B. Linton UMMZ January 25, 1907 UMMZ-124575 Larus heermani Birds
San Clemente Island C. B. Linton MCZ January 25, 1907 MCZ-250044 Larus heermanni Eggs
San Clemente Island (unknown) CUMV June 9, 1907 CUMV-3937 Larus heermanni Birds
San Clemente Island C. B. Linton MCZ October 9, 1907 MCZ-250045 Larus heermanni Eggs
San Clemente Island Irwin D. Nokes WFVZ February 6, 1915 WFVZ-2363 Larus heermanni Birds
San Clemente Island Irwin D. Nokes WFVZ March 15, 1915 WFVZ-2365 Larus heermanni Birds



SAN MIGUEL ISLAND
ISLAND COLLECTOR INSTITUTION DATE NUMBER SPECIMEN
San Miguel Island Chester Lamb MVZ September 26, 1927 MVZ-51447 Larus heermanni ssp. Birds


SAN NICOLAS ISLAND
ISLAND COLLECTOR INSTITUTION DATE NUMBER SPECIMEN
San Nicolas Island C. B. Linton MVZ February 10, 1907 MVZ-180010 Larus heermanni Birds


SANTA CATALINA ISLAND

1921 Santa Catalina Island:Larus heermann. Cassin. Heerman Gull. An adult female taken January 30, 1920, at Camp Banning, Santa Catalina Island, has the aberrant white primary coverts recently noted in individuals of the species by various observers. A bird seen at Santa Catalina February 17, 1921, displayed this same conspicuous covert-pattern. The consensus of present opinion seems to regard this condition as merely an occasional mutation, or 'sport.' Just how sporadic the occurrence really is must be determined by further observation.” [Dickey, D. R. and A. J. Van Rossem Additional notes from the coastal islands of Southern California in The Condor 25(4):126, July-August 1923]


ISLAND COLLECTOR INSTITUTION DATE NUMBER SPECIMEN
Santa Catalina Island F. Stephens SDMNH March 16, 181893 SDNHM-53 Larus heermanni Birds
Santa Catalina Island Frank Stephens MCZ March 18, 1893 MCZ-186011 Larus heermanni Birds
Santa Catalina Island Walter P. Taylor MVZ February 2, 1908 MVZ-12175 Larus herermanni Birds
Santa Catalina Island A. J. Van Rossem UCLA January 16, 1920 UCLA-3370 Larus heermanni Birds
Santa Catalina Island A. J. Van Rossem UCLA January 16, 1920 UCLA-3371 Larus heermanni Birds
Santa Catalina Island A. J. Van Rossem UCLA January 16, 1920 UCLA-3372 Larus heermanni Birds
Santa Catalina Island A. J. Van Rossem UCLA January 16, 1920 UCLA-3500 Larus heermanni Birds


SANTA CRUZ ISLAND

Eli Whitney Blake, Jr. visited Santa Cruz Island twice in 1886: from July 4- July 24, and again August 6-September 3. During his visits, Blake camped in a canyon near Platt's Harbor. He noted:

1886 Santa Cruz Island:Larus heermanni. HEERMANN'S GULL. — Less common than the preceding [Larus occidentalis]. Probably breeds; saw many young in the dark plumage.”


1907 Santa Cruz Island:Larus heermanni. Heerman Gull. Very common. Principal food consisted of shrimps secured in the kelp fields near shore. November and December many birds were just changing from “winter” to “summer” plumage, the heads being mixed,white and dark grayish.” [“At 11:30 p. m., November 19, 1907, my father (H. Linton), Mr. George Willett, and myself left San Pedro harbor in a dilapidated fishing smack and in company with a crawfisherman, one “Cold-foot” Jorgensen. We arrived off the south end of Santa Cruz Island at 10:30 the following day during a stiff norwester. For various reasons we were unable to make camp until the 22nd. It may not be amiss to state here that twice during the blow we were nearly wrecked: once while at anchor in Potatoe Harbor, a broken anchor allowing the boat to drift within the breaker line and nearly onto the rocks. In this instance the timely arrival of Willett and H. Linton in a small boat, saved the day, and incidentally the fishing smack. At another time (the engine having broken down) we were blown nearly onto the rocks of Anacapa Island; but with father at the wheel and Willett and I on the “sheet” we managed to hold her off. I mention the foregoing, and the many sleepless nights spent on the rocky shores, “running” the surf several times each day (with attendant duckings), etc., merely as a warning to those who seem inclined to believe a field naturalists ’ life “strewn with roses”. (Its ’ generally strewn with cacti!)”]
Linton, C. B. Notes from Santa Cruz Island] The Condor 10(3):124-129, May 1908


ISLAND COLLECTOR INSTITUTION DATE NUMBER SPECIMEN
Santa Cruz Island C. B. Linton UCM December 19, 1907 UCM-8208 Larus heermani Birds
Santa Cruz Island C. B. Linton MCZ December 18, 1907 MCZ-180012 Larus heermanni Birds
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Santa Cruz Island C. B. Linton MCZ October 17, 1908 MCZ-53934 Larus heermanni Birds
Santa Cruz Island C. B. Linton MCZ October 7, 1908 MCZ-53932 Larus heermanni Birds
Santa Cruz Island C. B. Linton MCZ October 8, 1908 MCZ-53923 Larus heermanni Birds
Santa Cruz Island C. B. Linton MCZ October 10, 1908 MCZ-53930 Larus heermanni Birds
Santa Cruz Island C. B. Linton MCZ October 10, 1908 MCZ-53930 Larus heermanni Birds
Santa Cruz Island C. B. Linton MCZ October 11, 1908 MCZ-55161 Larus heermanni Birds
Santa Cruz Island C. B. Linton MCZ October 12, 1908 MCZ-53933 Larus heermanni Birds
Santa Cruz Island C. B. Linton MCZ October 16, 1908 MCZ-180011 Larus heermanni Birds
Santa Cruz Island C. B. Linton MCZ October 19, 1908 MCZ-53935 Larus heermanni Birds


SANTA ROSA ISLAND

1927 Santa Rosa Island:Larus heermanni. Heermann Gull. Four were seen by Pemberton on April 3.” [“Through the generosity of Mr. Silsby M. Spalding who placed at our disposal his splendid cruiser Padariva I the writer accompanied by H. W. Carriger, Dudley DeGroot and 0. W. Howard was enabled to spend the period from March 25 to April 5, 1927, inclusive, among the Channel Islands off the coast of southern California.”]
Pemberton, J. R. Additions to the known avifauna of the Santa Barbara Islands The Condor 30(2):144-148, March-April 1928


ISLA CEDROS
ISLAND COLLECTOR INSTITUTION DATE NUMBER SPECIMEN
Isla Cedros P. I. Osburn AMNH March 11, 1911 AMNH-131295 Larus heermanni Birds


ISLA SAN MARTIN

1913 Isla San Martin:Larus heermanni. Heermann Gull. Several seen about the island.” Wright, H. W.The Birds of San Martin Island, Lower California The Condor 15(6):207-210, November-December, 1913


ISLAND COLLECTOR INSTITUTION DATE NUMBER SPECIMEN
Isla San Martin Chester Lamb MVZ July 14, 1925 MVZ-47760 Larus heermanni Birds
Isla San Martin Chester Lamb MVZ July 16, 1925 MVZ-47761 Larus heermanni Birds