Classification
Gaviiformes
Podicipediformes
Pelecaniformes
Ciconiiformes
Phoenicopteriformes
Anseriformes
Falconiformes
Galliformes
Gruiformes
Charadriiformes
Columbiformes
Cuculiformes
Strigiformes
Caprimulgiformes
Apodiformes
Coraciiformes
Upupiformes
Piciformes
Passeriformes
Botaurus stellaris


  • Eurasian bittern (Great Bittern)
  • Botaurus stellaris Linnaeus, 1758
  • Ciconiiformes- Ardeidae
  • Усны бухшувуу



Body length:  69-81 cm

Wing span: 100-130 cm

Passage migrant

Breeding season: May-August

Egg number: 4-6 (occasionally 3-7)

Egg color: Non-glossy olive brown with darker brown fine sprinkles.

Brood: 1 per year

Food: Fishes, amphibians and aquatic insects.

 

Status: Rare species. According to the IUCN Red List categories and criteria, the species evaluated as-Near Threatened.


Distribution and Range: Distribution range stretches from the Western Europe in the west to Sakhalin and Japanese islands in the east, from Tundra zone in the north to Southern tip of Africa. Wintering area are Mediterranean Sea, Eastern and Central Africa, India, Myanmar, and Southeastern China. In Mongolia: breeds in most large and small lakes, i.e, Orog Boontsagaan, Dorgon, Khar, Khar Us, Airag, Uvs, Khovsgol, Buir, Tashgain Tavan Nuur Lakes and Zavkhan, Khovd, Orkhon, Selenge, Tuul, Kherlen, Onon, Ulz, Khalkh, Nomrog, Degee, and Azarga Rivers basins.


Habitat: Lake shores and river banks covered by densely vegetation like reeds and other plants.


Population and Threats: Degradation of habitat due to long lasted drought, overgrazing of pasture along the lake shores, disturbance, of nesting sites and dry out of lakes.


Conservation Measures: Included as Rare animal in the Annex to the Mongolian Government Resolution #7 (2012). Some parts of distribution area is included within the NSPAN.


Further Actions: Restrict disruptions at breeding sites, establish lakes and rivers protected zones, forbid, livestock grazing; include in the appropriate international convention appendix, annexes, improve the conservation management In the NSPAN, assess population abundance.

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