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Full-Text Articles in Population Biology
Individual Identification And Sex Determination Of Whooping Cranes By Analysis Of Vocalizations, Glenn Carlson
Individual Identification And Sex Determination Of Whooping Cranes By Analysis Of Vocalizations, Glenn Carlson
Proceedings of the North American Crane Workshop
I analyzed 3 temporal and 2 frequency features of whooping crane (Grus americana) guard calls from 4 locations to determine if vocalizations could be used as a means of sex determination and individual identification in this species. Wild birds were recorded at Grays Lake, Idaho, and Aransas National Wildlife Refuge, Texas, and captive birds were recorded at Patuxent Wildlife Research Center, Maryland, and the International Crane Foundation, Wisconsin. Discriminant analysis provided an overall success rate of 98.8% in classifying individual calls to the appropriate sex of Whooping crane. This success rate is comparable to that of the current …
Unusual Movements And Behaviors Of Color-Banded Whooping Cranes During Winter, Thomas V. Stehn
Unusual Movements And Behaviors Of Color-Banded Whooping Cranes During Winter, Thomas V. Stehn
Proceedings of the North American Crane Workshop
Color-banding of whooping cranes (Grus americana) has allowed individual recognition of >45% of the population between 1985 and 1990 and has provided the opportunity to monitor individual movements and behaviors. Unusual occurrences have included: 5 whooping crane juveniles that separated from their parents prior to reaching the wintering grounds, a sandhill crane (G. canadensis) juvenile wintering with a whooping crane pair, whooping cranes that oversummered at Aransas, a widowed crane that paired with a new mate within 48 hours, 2 cranes that did not reach the wintering grounds until 3 years of age, a known nesting …