Birds, Heron, Marsh, Wildlife Fluffing Up, Tricolor March 14, 2023 Ted Jennings - TPJ Photography Leave a comment Caught in an embarrassing moment. Fluffing Up, Tricolor Fluffing Up, Tricolor I think he pretended nothing happened. Fluffing Up, Tricolor Most birds have an oil gland located under their wing. They use this to ‘preen’ and spread their feathers with oil for protection and cleanliness. Share this:TwitterFacebookLike this:Like Loading...