Butorides virescens, the Green heron;
Brevard county, Florida (23 May 2013).
This is one of our smaller, more active, and shyer species of heron in the Florida peninsula. I often come across the Green heron in tighter, more limb-strewn shoreline areas with plenty of growth around, above, and sticking into/out of the water. They can be fairly shy and difficult to photograph from time to time, given their apparent habitat preferences.