PIGU_TamaraZeller_crop_R1 Published on September 19, 2013 in Prince William Sound Marine Bird Population TrendsFull resolution (790 × 574) Next → A pigeon guillemot (Cepphus columba) enjoys a meal of forage fish (sandlance or capelin). Pigeon guillemot populations have still not yet recovered to pre-spill levels following the Exxon Valdez oil spill. Photo by Tamara Zeller, USFWS.