Stamp: Purple Heron (Ardea purpurea) (Botswana 1997)
Purple Heron (Ardea purpurea) (Botswana 1997)
04 August (Botswana ) within release Birds goes into circulation Stamp Purple Heron (Ardea purpurea) face value 1.25 Botswana pula
| Stamp Purple Heron (Ardea purpurea) in catalogues | |
|---|---|
| Stamp Number: | Sn:BW 632 |
Stamp is square format.
Also in the issue Birds:
- Stamp - African Sacred Ibis (Threskiornis aethiopicus) face value 60;
- Stamp - Cape Shoveller (Anas smithii) face value 70;
- Stamp - Greater Honeyguide (Indicator indicator) face value 80;
- Stamp - Purple Heron (Ardea purpurea) face value 1.25;
- Stamp - Yellow-billed Oxpecker (Buphagus africanus) face value 1.50;
- Stamp - Shaft-tailed Whydah (Tetraenura regia) face value 2;
- Stamp - White Stork (Ciconia ciconia) face value 2.50;
- Stamp - Ovambo Sparrowhawk (Accipiter ovampensis) face value 5;
- Stamp - Spotted Crake (Porzana porzana) face value 10;
- Stamp - Pel’s Fishing Owl (Scotopelia peli) face value 5;
- Stamp - Meyer's Parrot (Poicephalus meyeri) face value 15;
- Stamp - Harlequin Quail (Coturnix delegorguei) face value 20;
- Stamp - Marico Sunbird (Nectarinia mariquensis) face value 25;
- Stamp - Kurrichane Thrush (Turdus libonyanus) face value 30;
- Stamp - Redheaded Finch (Amadina erythrocephala) face value 40;
- Stamp - Red-billed Buffalo Weaver (Bubalornis niger) face value 50;
- Stamp - Woodland Kingfisher (Halcyon senegalensis) face value 1;
Stamp Purple Heron (Ardea purpurea) it reflects the thematic directions:
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.
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.
Herons are long-legged, long-necked, freshwater and coastal birds in the family Ardeidae, with 72 recognised species, some of which are referred to as egrets or bitterns rather than herons. Members of the genera Botaurus and Ixobrychus are referred to as bitterns, and, together with the zigzag heron, or zigzag bittern, in the monotypic genus Zebrilus, form a monophyletic group within the Ardeidae. Egrets do not form a biologically distinct group from herons, and tend to be named differently because they are mainly white or have decorative plumes in breeding plumage. Herons, by evolutionary adaptation, have long beaks.
