yellow legs, gray backside, brown back/wings, white chest, black stripe down center of neck. I only show up when yard is flooded. We travel in groups of 3-5.
French Settlement, Livingston Parish La.
Definitely a juvenile Tricolored Heron, I can see why it threw you off, looks quite different from the adult. Go here for a picture of a juvenile.
Here's what they look like a bit younger, at the age when they leave the nest.
http://www.whatbird.com/forums/photos/nieblas_gallery/category1211/picture19363.aspx