Nest maintenance must be ongoing, although great blue herons are not very fussy about a clean nest or surrounding area.
Anhinga are true water birds, they are either in it or over it. Their wettable feathers and dense bones make it possible for them spear fish while underwater.
A red shouldered hawk will sit on a perch and wait for dinner to appear. The hawk chooses a favorite perch. He often drops down onto his prey. Moments after this photo I saw the hawk with a cardinal in his talons. It was really upsetting.