Filtering by: Affiliation Oregon State University, Hatfield Marine Science Center Remove constraint Affiliation: Oregon State University, Hatfield Marine Science Center Affiliation University of North Carolina at Chapel Hill, College of Arts and Sciences, Environment, Ecology, and Energy Program Remove constraint Affiliation: University of North Carolina at Chapel Hill, College of Arts and Sciences, Environment, Ecology, and Energy Program Creator Bird, Clara N. Remove constraint Creator: Bird, Clara N. Subject Unoccupied aircraft systems Remove constraint Subject: Unoccupied aircraft systems Subject Guano Remove constraint Subject: Guano