Observations (1) Observations (1) Unitized cargo systems (1) Scientists (1) Rest (1) Nest building (1) Men (1) Building (1) Birds (1) Teachings (1) Sistemas de carga unificada (1) Nidificación (1) Descanso (1) Estuaire (1) Construction (1) Vestibule (1) Port (1) Percement (1) Îlot (1) Île (1) Campagne (1) Conteneurs (1) Enseignements (1) Nidification (1) Mesures (1) Hommes (1) Observations (1) Repos (1) Construction (1) Oiseaux (1)