Supriya Ghosh (Editor)

Leptoptilos

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Kingdom
  
Family
  
Ciconiidae

Higher classification
  
Stork

Phylum
  
Chordata

Order
  
Ciconiiformes

Scientific name
  
Leptoptilos

Mass
  
Marabou stork: 4.5 – 8 kg

Rank
  
Genus


Wingspan
  
Marabou stork: 2.2 – 2.9 m

Lower classifications
  

Adjutant stork leptoptilos and other water birds of kaziranga national park


Leptoptilos is a genus of very large tropical storks. The name means thin (lepto) feather (ptilos). Two species are resident breeders in southern Asia, and the marabou stork is found in Sub-Saharan Africa.

Contents

Leptoptilos Leptoptilos dubius by Estocks on DeviantArt

These are huge birds, typically 110–150 cm tall with a 210–250 cm wingspan. The three species each have a black upper body and wings, and white belly and undertail. The head and neck are bare like those of a vulture. The huge bill is long and thick. Juveniles are a duller, browner version of the adult.

Leptoptilos Leptoptilos robustus

Leptoptilos storks are gregarious colonial breeders in wetlands, building large stick nests in trees. They feed on frogs, insects, young birds, lizards and rodents. They are frequent scavengers, and the naked head and neck are adaptations to this, as are those of the vultures with which they often feed. A feathered head would become rapidly clotted with blood and other substances when a scavenging bird's head was inside a large corpse, and the bare head is easier to keep clean.

Leptoptilos FileMarabou Stork Leptoptilos crumeniferusjpg Wikimedia Commons

Most storks fly with neck outstretched, but the three Leptoptilos storks retract their necks in flight like a heron.

Species

Leptoptilos httpsuploadwikimediaorgwikipediacommonsthu

  • Lesser adjutant, Leptoptilos javanicus
  • Greater adjutant, Leptoptilos dubius
  • Marabou stork, Leptoptilos crumenifer (originally described as Ciconia crumenifera, it has sometimes been used with the wrong ending as crumeniferus but the correct masculine ending is crumenifer)

  • There is an ample fossil record of this genus. L. titan, which was hunted by prehistoric humans, was truly gigantic, and L. falconeri possibly was one of the most widespread storks worldwide during the Pliocene:

  • Leptoptilos falconeri (Early to Late Pliocene of south Asia and east Africa)
  • Leptoptilos indicus (Late Pliocene of Siwalik, India) – formerly Cryptociconia indica, may be the same as L. falconeri (Louchart et al. 2005)
  • Leptoptilos lüi (Middle Pleistocene of Jinniushan, Liaoning, China)
  • Leptoptilos patagonicus (Puerto Madryn Late Miocene of Valdés Peninsula, Argentina)
  • Leptoptilos pliocenicus (Early Pliocene of Odessa, Ukraine and Urugus, Ethiopia to Late Pliocene of Koro Toro, Chad and Olduvai, Tanzania) – includes L. cf. falconeri, may be the same as L. falconeri
  • Leptoptilos richae (Beglia Late Miocene of Bled ed Douarah, Tunisia, and Wadi Moghara, Egypt?)
  • Leptoptilos robustus (Pleistocene, Flores, Indonesia)
  • Leptoptilos titan (Notopuro Middle/Late Pleistocene of Watualang, Java, Indonesia)
  • Leptoptilos sp. (Ngorora Late Miocene of Baringo District, Kenya: Louchart et al. 2005)
  • Leptoptilos siwalicensis from the Siwalik deposits (Late Miocene? to Late Pliocene) may belong to this genus or to a closely related one (Louchart et al. 2005).

    References

    Leptoptilos Wikipedia