Animalia > Chordata > Aves > Ciconiiformes > Ciconiidae > Leptoptilos > Leptoptilos dubius

Leptoptilos dubius (Greater Adjutant)

Wikipedia Abstract

The greater adjutant (Leptoptilos dubius) is a member of the stork family, Ciconiidae. Its genus includes the lesser adjutant of Asia and the marabou stork of Africa. Once found widely across southern Asia, mainly in India but extending east to Borneo, the greater adjutant is now restricted to a much smaller range with only two small breeding populations; one in India with the largest colony in Assam and the other in Cambodia. Populations disperse after the breeding season. This large stork has a massive wedge-shaped bill, a bare head and a distinctive neck pouch. During the day, they soar in thermals along with vultures with whom they share the habit of scavenging. They feed mainly on carrion and offal; however, they are opportunistic and will sometimes prey on vertebrates. The English na
View Wikipedia Record: Leptoptilos dubius

Endangered Species

Status: Endangered
View IUCN Record: Leptoptilos dubius

EDGE Analysis

This tall, incredible bird has an almost prehistoric appearance. Adults can reach heights of 150cm and have enormous wingspans of about 250cm. Its large size and long, wedge-like bill gives it an unmistakable appearance. Mistakenly, people thought this species was good at coexisting with humans because of its ability to scavenge for food in urban areas. However, the wetland and woodland habitat the adjutant requires for breeding has been destroyed and degraded at a rapid rate.
Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 18.3667
EDGE Score: 5.043
View EDGE Record: Leptoptilos dubius


Diet [1]  Carnivore (Invertebrates), Carnivore (Vertebrates), Piscivore
Diet - Ectothermic [1]  20 %
Diet - Endothermic [1]  10 %
Diet - Fish [1]  20 %
Diet - Invertibrates [1]  20 %
Diet - Scavenger [1]  30 %
Forages - Ground [1]  50 %
Forages - Water Surface [1]  50 %
Clutch Size [3]  3
Incubation [2]  29 days
Maximum Longevity [4]  43 years
Snout to Vent Length [5]  4.854 feet (148 cm)


Protected Areas

Important Bird Areas

Biodiversity Hotspots

Name Location Endemic Species Website
Himalaya Bhutan, China, India, Myanmar, Nepal, Pakistan No
Indo-Burma Bangladesh, Cambodia, China, India, Laos, Myanmar, Thailand, Viet Nam No

Prey / Diet

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Aonyx cinereus (Oriental Small-clawed Otter)1
Icthyophaga ichthyaetus (Grey-headed Fish Eagle)1
Lutra sumatrana (Hairy-nosed Otter)1

Institutions (Zoos, etc.)

Institution Infraspecies / Breed 
Chiangmai Zoological Garden
Kaliningrad Zoo
Khao Kheow Open Zoo
Nehru Zoological Park

Range Map


External References



Attributes / relations provided by
1Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
2Greater Adjutant, BirdLife International (2001) Threatened birds of Asia: the BirdLife International Red Data Book. Cambridge, UK: BirdLife International.
3Jetz W, Sekercioglu CH, Böhning-Gaese K (2008) The Worldwide Variation in Avian Clutch Size across Species and Space PLoS Biol 6(12): e303. doi:10.1371/journal.pbio.0060303
4de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
5Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Abstract provided by DBpedia licensed under a Creative Commons License