R & E: Males begin to appear by the last week of March at the southern border but not until mid-April in the north.
Peak is during the last week of April in the south and in early May in the north.

March 10, 1984 - Earliest spring record
(1); Dunklin Co.; No observer listed; R & E, Widmann 1907.

March 22, 2008 - 2nd earliest spring record, and apparently the earliest with multiple individuals
(4); Photographed; Tywappity Community Lake, Scott Co.; Chris Barrigar; 21st Annual MBRC Report, 2008-64.

March 23, 1907 - 3rd earliest spring record
(1); Shannon Co.; No observer listed; R & E, Woodruff 1908.

April 25, 1963 - Highest single day count
(20); St. Louis; No observer listed; R & E, Hanselmann 1963.

May 8, 1983 - 2nd highest single day count
(9); Forest Park, St. Louis City; Randy Korotev; R & E.

May 13, 1879
(Male); Specimen (MCZ 45171); Charleston, Mississippi Co.; R & E.

R & E: Most common in the Ozarks and Ozark Border. Due to its requirement of relatively mature forest,
it is rare in the Glaciated and Osage plains. The species undoubtedly has declined since the early 1900s
in the same areas and for the same reasons that beset the Cerulean Warbler.

June 18-19, 1982- High count
(21); Barry Co.; Mick McHugh; R & E, AB 36:984.

R & E: Migrants are detected as early as the latter part of August, with numbers gradually increasing to peak in mid-September.
Although less common, birds are readily encountered through the first week of October, and casually encountered until the beginning of November.

Sept. 19, 1966 - Tower kill
(18); Columbia, Boone Co.; No observer listed; R & E, Elder and Hansen 1967.

Sept. 24, 1960 - Tower kill
(22); Columbia, Boone Co.; No observer listed; R & E, BB 28[1]:9.

Nov. 1-2, 1969 - 2nd latest fall record
(1); Maryville, Nodaway Co.; Mark Robbins; R & E, BB 38[3]:6.

Nov. 2, 1981 - Ties 2nd latest fall record
(1); Busch CA, St. Charles Co.; M. Richardson; R & E, NN 54:6.

Dec. 9, 2004 - Latest fall record
(1); Hawn SP, Ste. Genevieve Co.; Doug Willis; 18th Annual MBRC Report, 2005-31; Surprisingly, the bird was heard singing.

Note: Any significant observations since R & E will be added at a later time.