144 / FIELDS OF INSTRUCTION ZOO 6466C-Biology of the Reptilia (4) Prereq: ZOO 3303C. Systematics, life cycles, and behavior of reptiles. ZOO 6477-Birds of World (Lower Orders) (2) Survey of orders and families of non-passerine birds. ZOO 6478-Birds of World (Passeriformes) (2) Survey of orders and families of passerine birds. ZOO 6486C-Mammalogy (4) Prereq: ZOO 3303C. ZOO 6506C-Ethology (4) Prereq: ZOO 3513C. History, concepts, and methods of the comparative study of animal behavior. The evolution, mechanisms, and classification of behavior. ZOO 6816-Zoogeography (2) ZOO 6857C-Advanced Tropical Zoology (8) Vertebrate or invertebrate group selected as basis for studies of ecological systems in the tropics. Effects of elevation and temperatures on populations, successions, microhabitat, distribution, predation, evolution, and other aspects. Offered in Costa Rica as part of the program of the Organization for Tropical Studies. ZOO 6905-Individual Studies (1-8; max: 14) ZOO 6910-Supervised Research (1-5) S/U. ZOO 6927-Special Topics in Zoology (1-4) ZOO 6939-Seminar in Animal Behavior (1-3) Prereq: PCB 5415C or consent of instructor. Special behavioral topics. ZOO 6940-Supervised Teaching (1-5) S/U. ZOO 6971-Research for Master's Thesis (1-15) S/U. ZOO 7980-Research for Doctoral Dissertation (1-15) S/U.