. . . . . . . "1987-04-01T00:00:00Z"^^ . . "Branta leucopsis" . . "Tracheophyta" . . "Prop, J. and J.M. Black. 1998. Food intake, body reserves and reproductive success of barnacle geese Branta leucopsis staging in different habitats. Norsk Polarinstitutt Skrifter 200:175-194." . . . . "Allen Hurlbert. 2017. Avian Diet Database." .