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Nigrita (bird)
The nigritas, formerly called negrofinches, are small passerine birds belonging to the genus ''Nigrita'' in the estrildid finch family Estrildidae. There are four species which occur in forest, secondary growth and scrubland in West, Central and East Africa. They are 10-15 centimetres long. The bill is short and black and is fairly slender in some species. The colour of the plumage varies but all have a dark tail. The upperparts are grey or brown and the underparts are black, grey, white or reddish brown. The grey-headed nigrita and male pale-fronted nigrita have a black face and the white-breasted nigrita has a black cap. Nigritas have whistling or trilling songs and calls. They feed on insects, fruit and seeds A seed is an embryonic plant enclosed in a protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiosperm pl .... They often ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grey-headed Nigrita
The grey-headed nigrita (''Nigrita canicapillus'') is a common species of estrildid finch found in Africa. It has an estimated global extent of occurrence of 3,700,000 km2. It is widespread throughout the African tropical rainforest. The status of the species is evaluated as Least Concern A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. T .... ReferencesBirdLife Species Factsheet grey-headed nigrita grey-headed nigrita {{Estrildidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pale-fronted Nigrita
The pale-fronted nigrita (''Nigrita luteifrons'') is a common species of estrildid finch found in Africa. It has an estimated global extent of occurrence of 2,500,000 km2. It is widespread throughout the African tropical rainforest. The IUCN has classified the species as being of least concern A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. T .... References External linksBirdLife International species factsheet pale-fronted nigrita pale-fronted nigrita {{Estrildidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird Genera
Birds are a group of warm-blooded vertebrates constituting the class Aves (), 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 bee hummingbird to the ostrich. There are about ten thousand living species, more than half of which are passerine, or "perching" birds. Birds have whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which are modified forelimbs, gave birds the ability to fly, although further evolution has led to the loss of flight in some birds, including ratites, penguins, and diverse endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming. Bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nigrita (bird)
The nigritas, formerly called negrofinches, are small passerine birds belonging to the genus ''Nigrita'' in the estrildid finch family Estrildidae. There are four species which occur in forest, secondary growth and scrubland in West, Central and East Africa. They are 10-15 centimetres long. The bill is short and black and is fairly slender in some species. The colour of the plumage varies but all have a dark tail. The upperparts are grey or brown and the underparts are black, grey, white or reddish brown. The grey-headed nigrita and male pale-fronted nigrita have a black face and the white-breasted nigrita has a black cap. Nigritas have whistling or trilling songs and calls. They feed on insects, fruit and seeds A seed is an embryonic plant enclosed in a protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiosperm pl .... They often ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uganda 2011 246-crop
}), is a landlocked country in East Africa. The country is bordered to the east by Kenya, to the north by South Sudan, to the west by the Democratic Republic of the Congo, to the south-west by Rwanda, and to the south by Tanzania. The southern part of the country includes a substantial portion of Lake Victoria, shared with Kenya and Tanzania. Uganda is in the African Great Lakes region. Uganda also lies within the Nile basin and has a varied but generally a modified equatorial climate. It has a population of around 49 million, of which 8.5 million live in the capital and largest city of Kampala. Uganda is named after the Buganda kingdom, which encompasses a large portion of the south of the country, including the capital Kampala and whose language Luganda is widely spoken throughout the country. From 1894, the area was ruled as a protectorate by the United Kingdom, which established administrative law across the territory. Uganda gained independence from the UK on 9 October ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pale-fronted Nigrita
The pale-fronted nigrita (''Nigrita luteifrons'') is a common species of estrildid finch found in Africa. It has an estimated global extent of occurrence of 2,500,000 km2. It is widespread throughout the African tropical rainforest. The IUCN has classified the species as being of least concern A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. T .... References External linksBirdLife International species factsheet pale-fronted nigrita pale-fronted nigrita {{Estrildidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chestnut-breasted Nigrita
The chestnut-breasted nigrita (''Nigrita bicolor'') is a common species of estrildid finch found in Africa. It has an estimated global extent of occurrence of 3,000,000 km2. Habitat left, In Kakum National Park, Ghana The chestnut-breasted nigrita inhabits subtropical/ tropical (lowland) forest, mangrove and shrubland habitats of the African tropical rainforest. The status of the species is evaluated as Least Concern A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. T .... References BirdLife Species Factsheet chestnut-breasted nigrita chestnut-breasted nigrita {{Estrildidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White-breasted Nigrita
The white-breasted nigrita (''Nigrita fusconotus'') is a very small nigrita with a rather waxbill-like appearance, a black cap and tail contrast with a brown back and wings and white under parts. Both sexes are alike but the immature has the crown, rump and tail browner. It is widespread throughout the African tropical rainforest. It has an estimated global extent of occurrence of 2,700,000 km2. The status of the species is evaluated by the IUCN as being of least concern A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. T .... References External linksBirdLife International species factsheet on the Animal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seed Predation
Seed predation, often referred to as granivory, is a type of plant-animal interaction in which granivores (seed predators) feed on the seeds of plants as a main or exclusive food source,Hulme, P.E. and Benkman, C.W. (2002) "Granivory", pp. 132–154 in ''Plant animal Interactions: An Evolutionary Approach'', ed. C.M. Herrera and O. Pellmyr. Oxford: Blackwell. . in many cases leaving the seeds damaged and not viable. Granivores are found across many families of vertebrates (especially mammals and birds) as well as invertebrates (mainly insects); thus, seed predation occurs in virtually all terrestrial ecosystems. Seed predation is commonly divided into two distinctive temporal categories, pre-dispersal and post-dispersal predation, which affect the fitness of the parental plant and the dispersed offspring (the seed), respectively. Mitigating pre- and post-dispersal predation may involve different strategies. To counter seed predation, plants have evolved both physical defenses ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fruit
In botany, a fruit is the seed-bearing structure in flowering plants that is formed from the ovary after flowering. Fruits are the means by which flowering plants (also known as angiosperms) disseminate their seeds. Edible fruits in particular have long propagated using the movements of humans and animals in a symbiotic relationship that is the means for seed dispersal for the one group and nutrition for the other; in fact, humans and many animals have become dependent on fruits as a source of food. Consequently, fruits account for a substantial fraction of the world's agricultural output, and some (such as the apple and the pomegranate) have acquired extensive cultural and symbolic meanings. In common language usage, "fruit" normally means the seed-associated fleshy structures (or produce) of plants that typically are sweet or sour and edible in the raw state, such as apples, bananas, grapes, lemons, oranges, and strawberries. In botanical usage, the term "fruit" also i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insect
Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three pairs of jointed legs, compound eyes and one pair of antennae. Their blood is not totally contained in vessels; some circulates in an open cavity known as the haemocoel. Insects are the most diverse group of animals; they include more than a million described species and represent more than half of all known living organisms. The total number of extant species is estimated at between six and ten million; In: potentially over 90% of the animal life forms on Earth are insects. Insects may be found in nearly all environments, although only a small number of species reside in the oceans, which are dominated by another arthropod group, crustaceans, which recent research has indicated insects are nested within. Nearly all insects hatch from eggs. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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