Cormorants

Some fly close to the water surface at the same speed they fly far overhead, they only have two speeds stopped and fast. When they fly near the surface it's usually because they are executing a short flight of a few hundred yards. Generally when they are high overhead they are heading far down the river disappearing around one of the nearby bends. They remind me of Taxi Cabs on a busy downtown street continuously in motion without a concern in the world.