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Social Preference Of Four Cross-Foster Reared Sandhill Cranes, Thomas A. Mahan, Brenda S. Simmers
Social Preference Of Four Cross-Foster Reared Sandhill Cranes, Thomas A. Mahan, Brenda S. Simmers
Proceedings of the North American Crane Workshop
Four greater sandhill cranes (Grus canadensis tabida) were hatched and reared individually by 4 non-sandhill crane pairs: 2 by white-naped crane (G. vipio) pairs, 1 by a Siberian crane (G. leucogeranus) pair, and 1 by a red-crowned crane (G. japonensis) pair. After 1 year the sandhill cranes (2 male and 2 female) were placed in enclosed pens adjacent to an oppositesexed, same-age bird of the foster species on 1 side and an opposite-sexed, same-age conspecific on the other side. Data were collected throughout 1 year and included proximity between test and choice …
Sexual Size Dimorphism And Size Indices Of Six Species Of Captive Cranes At The International Crane Foundation, Scott R. Swengel
Sexual Size Dimorphism And Size Indices Of Six Species Of Captive Cranes At The International Crane Foundation, Scott R. Swengel
Proceedings of the North American Crane Workshop
Sexual size dimorphism and size indices in captive cranes were studied to learn dimorphism patterns and size relationships that could be used in the management of captive cranes. In 6 species of captive cranes. Siberian (Grus leucogeranus), eastern sarus (G. antigone sharpir), white-naped (G. vipio), common (G. grus), hooded (G. monacha), and red-crowned (G. japonensis), maIes averaged 14.5-28.5% heavier than femaIes (P < 0.05) in all species. MaIes had longer culmens, tarsi, and wing chords in all species. MaIes had significantly longer culmens (P < 0.05) in 4 of 6 species and had significantly longer tarsi than females (P < 0.05) in 3 of 6 species. Culmen and tarsus lengths both averaged 7% longer in males than females when the 6 species were combined. Wing chord length was not significantly dimorphic (P > 0.05) in any of the 4 species measured (Siberian, white-naped, hooded, and red-crowned cranes), averaging only 1.3 -3.3 % longer in males than in females. Body …