List of birds collected by Heller in Peru during the National Geographic Society Yale University Peruvian Expedition, 1915. Includes 2 lists. The small notebook pages includes numbered lists of birds (with common name) headed by location, including Ocobamba Pass, and subheaded by old collection, new, and birds seen. Several locations are unidentifiable. The larger notebook pages are headed by family and pages are numbered. They list number, type, sex, date, location, and elevation. Locations include Rio Casireni (Juvenil, Bolivia); Ollantaytambo, Occobamba, and Macchupichu, Peru.
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