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Activity and population characteristics of Andean Condors in southern Chile RChHN
SARNO,RONALD J.; FRANKLIN,WILLIAM L.; PREXL,WALTER S..
Data were collected on general activity patterns and population characteristics of free-ranging Andean Condors Vultur gryphus in Torres del Paine National Park, Chile from July 1992 to June 1994 during 3,680 h of observation. Seasonal differences were evident in relative abundance and activity patterns. The mean number of condors sighted/ observation significantly higher in fall-winter than in spring-summer. There was a significant decrease from spring-summer to fall-winter in the percentage of observations during which we sighted solitary condors and a significant increase in the number of groups of condors. In addition, mean monthly maximum group size was significantly larger in fall-winter than spring-summer. The sex ratio (males:females ) of juveniles...
Tipo: Journal article Palavras-chave: Andean Condor; Activity; Patagonia; Sex ratio.
Ano: 2000 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000100001
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