A few notable birds seen yesterday in Saint Louis area.  Large flock of Black Terns at Horseshoe Lake in Granite City.  Mourning Warbler along the river trail at Castlewood.  Also at Castlewood a pair of Hooded Warblers apparently attempting to nest. 
David Becher
Saint Louis
The Audubon Society of Missouri's Wild Bird Discussion Forum
List archives: https://po.missouri.edu/archives/mobirds-l.html