The Heermann's Gull is a gull that lives on the west coast of the United States and Mexico. It has a population of about 150,000 pairs, and 90% of these nest on the island of Isla Rasa off Baja California.
Heermann's Gulls eat a variety of food items. They are also known to steal food from other birds; Brown Pelicans are frequent victims.
The conservation status of the Heermann's Gull is Near Threatened (as of November 2014), but the good news is that the population trend is increasing. Weather patterns like El Niño strongly influence breeding success of this species.