Great Speckled Bird

I haven't posted a bird picture in a while, so here's an odd fellow I spotted Sunday night. I'm not sure what kind he is, but he's got his dinner firmly trapped in his beak if you look closely. I'll go do a little research on this fellow. I suspect he may be in the midst of an adolescent plumage change, but whether it's dark to white or white to dark I can't say. The dark tip on his bill may be a giveaway though.

Update-Juvenile Little Blue Heron, I believe! Which means it's white to dark blue.