[Egg-rolling motion in the arctic tern (Sterna macrura Naum.)].
D000818:Animals; D001522:Behavior, Animal; D001717:Birds; D004531:Eggs; D006702:Homing Behavior; D009042:Motivation; D009425:Nesting Behavior; D013731:Territoriality
Zur Eirollbewegung der Küstenseeschwalbe (Sterna macrura Naum.)