Regarding the American Avocet at RMBS (St. Charles Co.) - It appears it is not quite the latest fall record yet.  I have just begun going through the seasonal reports since Robbins' and Easterla's Birds of Missouri was published and found the following:
 
Nov. 19, 2007
(1); Squaw Creek NWR, Holt Co.; Larry Lade; BB 75[1]:10.
 
Josh
 
 
Joshua Uffman
St. Louis County, MO
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MO-Records: www.showme-birds.com
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