Not unlike other waterfowl, loons will spend several hours every day preening. Preening sessions can last as long as 30 minutes each time. The reason for preening is to keep the feathers well organized. free of parasites, and in the case of loons and other waterfowl, oiled, so as the feathers can be waterproof, keeping the bird warmer and more streamline in the water. This oil comes from the uropygial gland or (preening gland) at the base of the tail.
This common behavior of "wing flapping" or "stretching" occurs during preening sessions.
"Morning Stretch" is a celebration of this beautiful bird as the foggy morning gives way to the early morning sun.