01 August (Botswana ) within release Endangered birds - Bustards goes into circulation Souvenir Sheet Endangered Birds : Bustards face value 31.50 Botswana pula
Souvenir Sheet Endangered Birds : Bustards in catalogues | |
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Stanley Gibbons: | Sg: BW MS 1297 |
Souvenir Sheet is square format.
Also in the issue Endangered birds - Bustards:
Data entry completed
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Souvenir Sheet Endangered Birds : Bustards in digits | |
Country: | Botswana |
Date: | 2017-08-01 |
Emission: | Commemorative |
Format: | Souvenir Sheet |
Face Value: | 31.50 Botswana pula |
Souvenir Sheet Endangered Birds : Bustards it reflects the thematic directions:
Animals are multicellular, eukaryotic organisms of the kingdom Animalia (also called Metazoa). All animals are motile, meaning they can move spontaneously and independently, at some point in their lives. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their lives. All animals are heterotrophs: they must ingest other organisms or their products for sustenance.
Birds (Aves), a subgroup of Reptiles, are the last living examples of Dinosaurs. They are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the 5 cm (2 in) bee hummingbird to the 2.75 m (9 ft) ostrich. They rank as the class of tetrapods with the most living species, at approximately ten thousand, with more than half of these being passerines, sometimes known as perching birds. Birds are the closest living relatives of crocodilians.