Leopold, Aldo / Organizations, Committees: Delta [Duck Station -- Manitoba]
Delta - bulletin #1, drawings, pp. -
The Cloacal Characters of Sex and Age. A. The Juvenal penis as it protrudes from the vent in cloacal examination. B. The sheathed adult penis as it protrudes from the vent in cloacal examination. C. Distended adult penis protruding from the vent. D. Cloaca of immature male. Ventral aspect of cloaca opened at the vent, showing the Juvenal penis and the opening of the bursa. B. Cloaca of adult male. Ventral aspect showing sheathed penis on left cloacal wall. F. Posterior view of the cloaca of the adult male in dissection, showing the penis as it passes through the wall of the cloaca into the body cavity. G. Cloaca of immature female. Ventral aspect showing the occluded oviduct and the opening of the bursa. H. Cloaca of adult female. Ventral aspect showing the perforated oviduct on left cloacal wall. I. Cloaca of immature female in dissection showing the position of the bursa.
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