The osprey has both eyes on the front of it's head, giving it depth perception. It will hover above the river and dive straight down into the water. Kingfishers may also hover and dive. A greenbacked heron will more commonly be perched on a log or woody debris that extends into the water. One might spot a Merganser Duck swimming rapidly with it's head submerged, chasing a fish.
Dippers are a lot of fun to watch even though there size is small, and their plumage is grey.
They can be seen walking on the river bottom in a riffle, rapid, or even a falls, searching for aquatic insects which hide under the protection of small rocks. Dippers have transparent eyelids which act as goggles and flaps that cover their nostrils. They face into the current to use the force of the current to help them pry under gravels and rocks with their heads, often feeding in shallow water, but sometimes diving deep. On shore they frequently perform repeated squats or dips. Still along the river a variety of swallows perform acrobatic flight in search of insects.