Yes Scaley breasted Munia aka Nutmeg Manakin. They are not native to Florida and are an established exotic(as many other species in Florida). Yes they usually do travel in small flocks, but not always.
Finally... I can sleep tonight!
I looked at some of the TCH pics I have to see if I could see anything. I made a comparison photo for you. I am leaning towards Little Blue though because of the all slate color. I did find a good photo of a LBH to compare to. here is the link https://www.pbase.com/merriwolf/image/110851330
Come crown my brow with leaves of myrtle,I know the tortoise is a turtle.Come carve my name in stone immortal,I know the turtoise is a tortle.I know to my profound despairI bet on one to beat a hare.I also know I’m now a pauperBecause of its tortley, turtley, torpor.
-- Ogden Nash