This is a Little Blue in his breeding colors. Typically they are a dark slate blue and even during the spring are just too dark to grab a clear color shot. The light and angle has to be just right to see their many different shades.
Above you can see the magenta colors on his head and neck. Even here the electric blue on his bill is not all that clear.
They don’t have the flowing plumage of an Egret but their colors may be the most vivid of all the wading birds.