Human: What is the name of the university that completed a survey of marine birds in the Puget Sound? Assistant: 
The university that completed a survey of marine birds in the Puget Sound is Western Washington University (WWU). The cause of the decrease in population is not clear, although researchers suspect likely causes such as pollution, non-native species, and collisions with man made structures, abandoned or lost fishing gear, some fishing practices, unavailable food sources, and loss of habitat.