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African Warbler
The African warblers are a newly erected family Macrosphenidae, of songbirds. Most of the species were formerly placed in the Old World warbler family Sylviidae, although one species, the rockrunner, was placed in the babbler family, Timaliidae. A series of molecular studies of the Old World warblers and other bird families in the superfamily Sylvioidea (which includes the larks, swallows and tits) found that the African warblers were not part of Sylviidae but were instead an early (basal) offshoot of the entire clade Sylvioidea. Some taxonomic authorities place the entire family Hyliidae here. Distribution and habitat The African warblers inhabit a range of habitats in sub-Saharan Africa. These range from primary rainforest to forest edge and open woodland habitats for the longbills, wooded savanna to arid scrubland and bushland in the crombecs, rocky arid scree areas and grassland for the rockrunner, and grassland for the moustached grass warbler and Cape grassbird. The fami ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Grassbird
The Cape grassbird or Cape grass warbler (''Sphenoeacus afer'') is an African warbler found in southern Africa. Taxonomy Formerly placed in the family Sylviidae, it is the only member of the genus ''Sphenoeacus''. The taxonomy of the "African warblers", an assemblage of usually species-poor and apparently rather ancient "odd warblers" from Africa, is currently in a state of flux. Etymology Gr. ''sphen'' 'wedge'; ''oiax'' 'helm, rudder', in reference to the wedge-shaped tail 'Helm Dictionary of Scientific Bird Names' - James A. Jobling Description The Cape grassbird is long and weighs around Its crown and face sides are rufous, except for white around the eye, and it has black malar and moustachial stripes on its white throat. The upperparts are brown with heavy streaking and the long tail is a lighter brown while the underparts are whitish with blackish spotting. The sexes are similar, but the juvenile has a streaked cap and is duller than the adult. The song is jangling an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Territory (animal)
In ethology, territory is the sociographical area that an animal consistently defends against conspecific competition (or, occasionally, against animals of other species) using agonistic behaviors or (less commonly) real physical aggression. Animals that actively defend territories in this way are referred to as being territorial or displaying territorialism. Territoriality is only shown by a minority of species. More commonly, an individual or a group of animals occupies an area that it habitually uses but does not necessarily defend; this is called its home range. The home ranges of different groups of animals often overlap, and in these overlap areas the groups tend to avoid each other rather than seeking to confront and expel each other. Within the home range there may be a ''core area'' that no other individual group uses, but, again, this is as a result of avoidance. Function The ultimate function of animals inhabiting and defending a territory is to increase the in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinct
Extinction is the termination of a kind of organism or of a group of kinds ( taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryote globally, and possibly many times more if microorganisms, like bacteria, are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chapin's Crombec
Chapin's crombec (''Sylvietta leucophrys chapini'') is an enigmatic African warbler, formerly placed in the family Sylviidae. It is currently considered a subspecies of the white-browed crombec, but might be a distinct species; too little is known about it to determine this now with reasonable certainty. It is found only in the Lendu Plateau, Democratic Republic of the Congo. It was removed from the IUCN Red List in 2007 as it is considered a white-browed crombec subspecies, pending further research. It was previously considered a species of least concern, though actually it has not been encountered for some time, and might even be extinct. However, this is not very likely given the fairly low rates of bird extinctions in Africa - compared to, e.g., South America and Southeast Asia. In any case, the Second Congo War, and especially the Ituri conflict, have completely prevented any effort to relocate these birds. The common name commemorates the American ornithologist James Paul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White-browed Crombec
The white-browed crombec (''Sylvietta leucophrys'') is a species of African warbler, formerly placed in the family Sylviidae. The enigmatic Chapin's crombec might be a distinct species, or a subspecies ''Sylvietta leucophrys chapini'' of the present species. The white-browed crombec is found in Burundi, Democratic Republic of the Congo, Kenya, Rwanda Rwanda (; rw, u Rwanda ), officially the Republic of Rwanda, is a landlocked country in the Great Rift Valley of Central Africa, where the African Great Lakes region and Southeast Africa converge. Located a few degrees south of the Equator ..., Tanzania, and Uganda. References white-browed crombec Birds of Sub-Saharan Africa Birds of East Africa white-browed crombec Taxonomy articles created by Polbot {{Macrosphenidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lemon-bellied Crombec
The lemon-bellied crombec (''Sylvietta denti'') is a species of African warbler, formerly placed in the family Sylviidae. It is sparsely present throughout the African tropical rainforest. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist shrubland Shrubland, scrubland, scrub, brush, or bush is a plant community characterized by vegetation dominated by shrubs, often also including grasses, herbs, and geophytes. Shrubland may either occur naturally or be the result of human activity. It .... References lemon-bellied crombec Birds of the African tropical rainforest lemon-bellied crombec Taxonomy articles created by Polbot {{Macrosphenidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Crombec
The green crombec (''Sylvietta virens'') is a species of African warbler, formerly placed in the family Sylviidae. It is widespread across the African tropical rainforest. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist shrubland Shrubland, scrubland, scrub, brush, or bush is a plant community characterized by vegetation dominated by shrubs, often also including grasses, herbs, and geophytes. Shrubland may either occur naturally or be the result of human activity. It .... References green crombec Birds of the African tropical rainforest green crombec Taxonomy articles created by Polbot {{Macrosphenidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sylvietta
''Sylvietta'', the crombecs, is a genus of African warblers. Formerly placed in the massively paraphyletic Sylviidae, it is now considered to belong to a newly recognized family found only in Africa, Macrosphenidae. It contains the following species: * Green crombec, ''Sylvietta virens'' * Lemon-bellied crombec, ''Sylvietta denti'' * White-browed crombec, ''Sylvietta leucophrys'' ** Chapin's crombec, ''Sylvietta (leucophrys) chapini'' - possibly extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ... (late 20th century?) * Northern crombec, ''Sylvietta brachyura'' * Philippa's crombec, ''Sylvietta philippae'' * Red-capped crombec, ''Sylvietta ruficapilla'' * Red-faced crombec, ''Sylvietta whytii'' * Somali crombec, ''Sylvietta isabellina'' * Long-billed crombec, ''Syl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crombec Longbilled 2011 05 16 09 Alan Manson Prieska
''Sylvietta'', the crombecs, is a genus of African warblers. Formerly placed in the massively paraphyletic Sylviidae, it is now considered to belong to a newly recognized family found only in Africa, Macrosphenidae The African warblers are a newly erected family Macrosphenidae, of songbirds. Most of the species were formerly placed in the Old World warbler family Sylviidae, although one species, the rockrunner, was placed in the babbler family, Timaliidae. .... It contains the following species: * Green crombec, ''Sylvietta virens'' * Lemon-bellied crombec, ''Sylvietta denti'' * White-browed crombec, ''Sylvietta leucophrys'' ** Chapin's crombec, ''Sylvietta (leucophrys) chapini'' - possibly extinct (late 20th century?) * Northern crombec, ''Sylvietta brachyura'' * Philippa's crombec, ''Sylvietta philippae'' * Red-capped crombec, ''Sylvietta ruficapilla'' * Red-faced crombec, ''Sylvietta whytii'' * Somali crombec, ''Sylvietta isabellina'' * Long-billed crombec, ''Sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angola
, national_anthem = "Angola Avante"() , image_map = , map_caption = , capital = Luanda , religion = , religion_year = 2020 , religion_ref = , coordinates = , largest_city = capital , official_languages = Portuguese , languages2_type = National languages , languages2 = , ethnic_groups = , ethnic_groups_ref = , ethnic_groups_year = 2000 , demonym = , government_type = Unitary dominant-party presidential republic , leader_title1 = President , leader_name1 = João Lourenço , leader_title2 = Vice President , leader_name2 = Esperança da CostaInvestidura do Pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered Species
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and invasive species. The International Union for Conservation of Nature (IUCN) Red List lists the global conservation status of many species, and various other agencies assess the status of species within particular areas. Many nations have laws that protect conservation-reliant species which, for example, forbid hunting, restrict land development, or create protected areas. Some endangered species are the target of extensive conservation efforts such as captive breeding and habitat restoration. Human activity is a significant cause in causing some species to become endangered. Conservation status The conservation status of a species indicates the likelihood that it will become extinct. Multiple factors are considered when assess ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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. They do not qualify as threatened, near threatened, or (before 2001) conservation dependent. Species cannot be assigned the "Least Concern" category unless they have had their population status evaluated. That is, adequate information is needed to make a direct, or indirect, assessment of its risk of extinction based on its distribution or population status. Evaluation Since 2001 the category has had the abbreviation "LC", following the IUCN 2001 Categories & Criteria (version 3.1). Before 2001 "least concern" was a subcategory of the "Lower Risk" category and assigned the code "LR/lc" or lc. Around 20% of least concern taxa (3261 of 15636) in the IUCN database still use the code "LR/lc", which indicates they have not been re-evalua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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