title: [Observations on behaviour during pregnancy and birth in orang-utan (Pongo pygmaeus) at Tierpark Berlin (author's transl)].
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D000836:Animals, Zoo; D001522:Behavior, Animal; D005260:Female; D005865:Gestational Age; D015186:Hominidae / Q000502:physiology*; D007743:Labor, Obstetric; D008425:Maternal Behavior; D008598:Menstruation; D011247:Pregnancy; D011270:Pregnancy, Animal; D013997:Time Factors; D014844:Vulva / Q000502:physiology
vernacular_title: Beobachtungen zum Schwangerschafts- und Geburtsverhalten beim Orang-Utan (pongo Pygmaeus) im Tierpark Berlin