This remarkable bird was found by John Kendall. It looked identical to the Great Black-backed X Glaucous Gull hybrid on page 295 of Howell and Dunn's "Gulls of the Americas." Though nearly as dark-backed as a GBBG, the bird had pure white wing tips and underwings like a GLGU. These features can be seen in images two and three that were generously provided by the photographer, John Kendall. The 4th image was taken a year later at the same location. It was assumed that we were looking at the same individual, but this bird has an underwing pattern more similar to a Great Black-backed.
Comments? Questions? Drop me an Email!