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Openbill storks
African openbill by Huet & Prêtre
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Ciconiiformes
Family:	Ciconiidae
Genus:	Anastomus Bonnaterre, 1791
Type species
Ardea oscitans Boddaert, 1783
Species
Anastomus lamelligerus Anastomus oscitans
Synonyms
Hians Lacepede, 1799 Rhynchochasme Hermann, 1804 Empharis Rafinesque, 1815 (Nom. Nov.) Apertirostra Drapiez, 1822 Chaenoramphe Dumont, 1817 Chaenoramphus Thon, 1830 (Emend.) Chenoramphus Gray, 1848 (Emend.) Hiator Reichenbach, 1852-53

The openbill storks or openbills are two species of stork (family Ciconiidae) in the genus Anastomus. They are large wading birds characterized by large bills, the mandibles of which do not meet except at the tip. This feature develops only in the adults. Both species feed predominantly on molluscs. The roof of the upper bill is fringed with plate-like structures ("lamellae") in the African openbill, but these are absent in the Asian openbill.

Taxonomy

The genus Anastomus was erected by the French naturalist Pierre Bonnaterre in 1791. The type species was subsequently designated as the Asian openbill (Anastomus oscitans). The name Anastomus is from the Ancient Greek αναστομοω anastomoō meaning "to furnish with a mouth" or "with mouth wide-opened".

There are two species of openbilled storks:

Genus Anastomus – Bonnaterre, 1791 – two species

Common name	Scientific name and subspecies	Range	Size and ecology	IUCN status and estimated population
African openbill	Anastomus lamelligerus Temminck, 1823 Two subspecies A. l. lamelligerus A. l. madagascariensis	A resident breeder in Sub-Saharan Africa, including Madagascar	Size: measuring 80–94 cm (31–37 in) and weighing 1–1.3 kg (2.2–2.9 lb) Habitat: Diet: aquatic snails and fresh water mussels	LC
Asian openbill	Anastomus oscitans (Boddaert, 1783)	A resident breeder in tropical southern Asia from India and Sri Lanka east to Southeast Asia.	Size: 68 cm (27 in) height (81 cm (32 in) long). Habitat: Diet:	LC

References

1. "Ciconiidae". aviansystematics.org. The Trust for Avian Systematics. Retrieved 2023-07-27.
2. Beddard, F. E. (1901). "Some Notes upon the Anatomy and Systematic Position of the Ciconiine Genus Anastomus". Proceedings of the Zoological Society of London. 70 (2): 365–371. doi:10.1111/j.1469-7998.1901.tb08551.x.
3. Kahl, MP (1971). "Food and feeding behavior of Openbill Storks". Journal of Ornithology. 112 (1): 21–35. Bibcode:1971JOrni.112...21K. doi:10.1007/BF01644077. S2CID 1484358.
4. Bonnaterre, Pierre Joseph; Vieillot, Louis Pierre (1823). Tableau encyclopédique et méthodique des trois règnes de la nature: Ornithologie (in French). Vol. Part 1. Paris: Panckoucke. p. xciii. Although the title page bears the date of 1823 the section (livraison) containing the description was published in 1791. See: Dickinson, E.C.; Overstreet, L.K.; Dowsett, R.J.; Bruce, M.D. (2011). Priority! The Dating of Scientific Names in Ornithology: a Directory to the literature and its reviewers. Northampton, UK: Aves Press. p. 78. ISBN 978-0-9568611-1-5.
5. Gray (1841). A List of the Genera of Birds : with their Synonyma and an Indication of the Typical Species of Each Genus (2nd ed.). London: R. and J.E. Taylor. p. 87.
6. Mayr, Ernst; Cottrell, G. William, eds. (1979). Check-list of Birds of the World. Vol. 1 (2nd ed.). Cambridge, Massachusetts: Museum of Comparative Zoology. pp. 246–247.
7. Jobling, James A. (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p. 46. ISBN 978-1-4081-2501-4.
8. Gill, Frank; Donsker, David, eds. (2019). "Storks, frigatebirds, boobies, cormorants, darters". World Bird List Version 9.2. International Ornithologists' Union. Retrieved 16 July 2019.

v t e Genera of storks and their extinct allies
Kingdom: Animalia Phylum: Chordata Class: Aves Clade: Aequornithes Order: Ciconiiformes
Ciconiiformes Ciconiiformes incertae sedis †Sanshuiornis? Ciconiidae Anastomus Ciconia †Ciconiopsis? †Eociconia? Ephippiorhynchus †Grallavis Jabiru Leptoptilos Mycteria †Palaeoephippiorhynchus †Pelargodes †Pelargosteon †Prociconia
Category

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