Sept. 1, 2012 - Earliest fall record
(Adult); Photographs and video; RMBS, St. Charles Co.; Jim and Charlene Malone (documentation), Andrew Reago (photographs and video); found by Chrissy McClarren; 25th Annual MBRC Report, 2012-45.

Sept. 10-18, 2004 - 2nd earliest fall record and 1st record away from the Mississippi River
(Adult); Specimen (KUNHM 11604); Smithville Lake, Clay Co.; Found by Nathan Woodland, documented by Kristi Mayo (photographs) and Mark Robbins; 23rd Annual MBRC Report, 2009-93.



Dec. 4-23, 1988 - 4th state record and 2nd with photographic documentation
(Adult); Photographed; Alton Dam (now RMBS), St. Charles Co.; Bill Rudden, Ron Goetz et al; R & E and 2nd Annual MBRC Report, 1989-8. Observers on Dec. 30 reported two Lesser Black-backed Gulls, but no documentation was received for a second bird. In addition, a bird seen at this same locality on Feb. 4 and 18, 1989 was presumed to be the same individual as the one photographed in Dec. (R & E).

Dec. 29, 2008 - Jan. 3, 2009 - 3rd record away from the Mississippi River
(Adult); Photographed; Smithville Lake, Clay Co.; Linda Williams (documentation with photographs), Doug Willis; 22nd Annual MBRC Report, 2009-37.

Dec. 30, 1980 - 1st state record
(second-cycle bird); Chain of Rocks, St. Louis Co.; Bill Rudden, Phoebe Snetsinger, David Jones, Ron Goetz; R & E, BB 48[2]:13.

Jan. 1, 2011 - Away from the Mississippi River
(One adult and one apparent 3rd-cycle bird); Photographed; Long Branch SP, Macon Co; Peter Kondrashov (documentation with photographs), Frankie Cuculich; 24th Annual MBRC Report, 2011-4. At the time this species was considered casual away from the Mississippi River, since then its status has been changed to 'rare' statewide, so that it no longer requires documentations except in summer.

Jan. 6, 1991 - ~6th state record
(Adult); St. Louis, St. Louis Co.; P. Hoell; 5th Annual MBRC Report, 1991-1.

Jan. 19, 2011 - Away from the Mississippi River
One adult and one apparent 2nd-cycle bird; Long Branch SP, Macon Co; Paul McKenzie (documentation) Brad Jacobs, Janet Hasselrig; 24th Annual MBRC Report, 2011-16. The adult reported here may have been the same bird as the adult in 2011-4. At the time this species was considered casual away from the Mississippi River, since then its status has been changed to 'rare' statewide, so that it no longer requires documentations except in summer.

Feb. 2-16, 2010 - 4th record away from the Mississippi River
(Third-cycle bird); Photographed; Long Branch SP, Macon Co.; Peter Kondrashov, Sandra Elbert (documentation with photographs), Kathleen Anderson (documentation); 23rd Annual MBRC Report, 2010-19. This bird, while adult-like, lacked white mirrors in the wingtips and had some dark markings on the bill; hence the assignment to a third-cycle type.

Feb. 9, 1991 - ~7th state record
(Adult and subadult); RMBS, St. Charles Co.; P. McKenzie, T. Barksdale, R. Goetz; 4th and 5th Annual MBRC Reports, 1991-9.

Feb. 11-12, 1984 - 3rd state record
(Adult); Photographed (VIREO x08/5/002); Alton Dam (now RMBS), St. Charles Co.; Bill Rudden, Ron Goetz, m. ob.,
photographed by B. Rose; R & E.

Feb. 16, 1981 - 2nd state record
(Adult); Alton Dam (now RMBS), St. Charles Co.; Bill Rudden et al.; R & E, BB 48[2]:13.



March 4, 2005 - 2nd record away from the Mississippi River
(Adult); Photographed; Smithville Lake, Clay Co.; Kristi Mayo; 18th Annual MBRC Report, 2005-33.

March 12, 2010 - 5th record away from the Mississippi River
(Adult); Photographed; Long Branch SP, Macon Co.; Peter Kondrashov (documentation with photographs), Frankie Cuculich,
Susan Hazelwood; 23rd Annual MBRC Report, 2010-37.

April 2, 2011 - Very late spring record and away from the Mississippi River
(Adult); Photographed; Long Branch SP, Macon Co.; Peter Kondrashov (documentation with photographs); 24th Annual MBRC Report, 2011-31. The adult reported here may have been the same bird as the adult in 2011-4 and 2011-16. At the time this species was considered casual away from the Mississippi River, since then its status has been changed to 'rare' statewide, so that it no longer requires documentations except in summer.



July 30, 1992 - 1st summer record
(2nd or 3rd winter bird); RMBS, St. Charles Co.; Dick Anderson, Mitzi Anderson; 6th Annual MBRC Report, 1992-49.



Note: All accepted records (4) of Lesser Black-backed Gull at time of R & E (1992) are listed in records above and at that time there were none recorded away from the Mississippi River. Additionally, any significant records at the Mississippi River, where there have been multiple observations since R & E, will be added at a later time.



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