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Individual features in the calls of the Grey Crowned Crane, Balearica regulorum gibbericeps

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This study investigates if vocal monitoring of the Grey Crowned Crane, Balearica regulorum gibbericeps, is a feasible method to monitor their population. The vocal repertoire of the Grey Crowned Crane was analysed for individual, pair and sexual differences. Wild cranes could not be differentiated by individuals and sexes, and were therefore investigated for identification of pairs. Results were supplemented with data on captive birds for individuals and sexes. The results show that individuals and sex identification are possible in the unison call. Pair identification is feasible in the unison call. Vocal monitoring can, therefore, be used as a possible monitoring tool in Grey Crowned Crane populations.
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Document Type: Research Article

Publication date: September 1, 2001

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