The bird genus Pseudibis consists of two South-East Asian species in the ibis subfamily, Threskiornithinae. The Giant Ibis is also sometimes placed in this genus, as it is on PoB. It is closely related to the genus Geronticus.
Listen to the sound of Giant Ibis
Copyright remark: Most sounds derived from xeno-canto
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Video Giant Ibis
copyright: Josep del Hoyo
It has declined as a result of hunting, wetland drainage for agriculture, and deforestation. It relies on seasonal pools, which in the past were created by the now much depleted megafauna. The species appears to be very sensitive to human disturbance, particularly during the dry season when birds are concentrated around available waterholes, and this is almost certainly the greatest threat, rendering much apparantly suitable habitat unusable. There are plans to clear large areas of lowland dry forest, including Western Siem Pang IBA where the species occurs, for teak plantations. In the Kulen Prumptep Wildlife Sanctuary the human population is increasing and subsequent expansion of agricultural land is causing loss of breeding habitat for the species. Nest predation by common palm civet Paradoxurus hermaphroditus and/or yellow-throated marten Martes flavigula on two occasions in 2004 suggest that loss of nestlings to mammalian carnivores might be a significant constraint on breeding success, a theory supported by a study which found the number of young fledged per nest was 50% higher for protected nests.