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Cyanocitta cristata11-12''
Cornell link
These are very common in the central and eastern US. I have always thought that despite their number, they really aren't very common. They are really a very beautiful bird, and they're big. I even like one of their more common calls and have always thought it to be icy.
It was difficult to find a decent picture of a bluejay, they always seem to be in the top of the trees alerting everyone that I am there.