|
Dusky Long-tailed Cuckoo
The dusky long-tailed cuckoo (''Cercococcyx mechowi'') is a species of cuckoo in the family Cuculidae. It is found in forests in Central Africa. The IUCN has assessed it as a least-concern species. Taxonomy The species was described by Jean Cabanis in 1882. It is monotypic. The specific epithet ''mechowi'' honours Friedrich Wilhelm Alexander von Mechow, a Prussian explorer. The name ''occidentalis'' for a population with different songs is a ''nomen nudum''. Description The dusky long-tailed cuckoo is about long and weighs . The head, nape and upperparts are dark brown, washed sooty-grey and with a purple-blue iridescence. The wings are dark brown, with buff and white spots. The underparts are white, with blackish-brown bars, and the vent is buff. The tail is long and graduated. The eyes are dark brown, the beak is greenish-black and the feet are yellow. The male and female are alike. The juvenile bird has a blackish throat and rufous bars on its upperparts. The nestling's skin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Cabanis
Jean Louis Cabanis (8 March 1816 – 20 February 1906) was a German ornithologist. Cabanis was born in Berlin to an old Huguenot family who had moved from France. Little is known of his early life. He studied at the University of Berlin from 1835 to 1839, and then travelled to North America, returning in 1841 with a large natural history collection. He was assistant and later director of the Natural History Museum of Berlin (which was at the time the Berlin University Museum), taking over from Martin Lichtenstein. He founded the ''Journal für Ornithologie'' in 1853, editing it for the next forty-one years, when he was succeeded by his son-in-law Anton Reichenow. He died in Friedrichshagen. A number of birds are named after him, including Cabanis's bunting ''Emberiza cabanisi'', Cabanis's spinetail ''Synallaxis cabanisi'', Azure-rumped tanager The azure-rumped tanager or Cabanis's tanager (''Poecilostreptus cabanisi'') is a species of bird in the family Thraupidae. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mixed-species Foraging Flock
A mixed-species feeding flock, also termed a mixed-species foraging flock, mixed hunting party or informally bird wave, is a flock of usually insectivorous birds of different species that join each other and move together while foraging. These are different from feeding aggregations, which are congregations of several species of bird at areas of high food availability. While it is currently unknown how mixed-species foraging flocks originate, researchers have proposed a few mechanisms for their initiation. Many believe that nuclear species play a vital role in mixed-species flock initiation. Additionally, the forest structure is hypothesized to play a vital role in these flocks' formation. In Sri Lanka, for example, vocal mimicry by the greater racket-tailed drongo might have a key role in the initiation of mixed-species foraging flocks, while in parts of the American tropics packs of foraging golden-crowned warblers might play the same role. Composition Mixed-species foraging ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Described In 1882
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. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of Sub-Saharan Africa
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. Birds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cercococcyx
''Cercococcyx'' is a genus of cuckoos in the family Cuculidae, known as the long-tailed cuckoos. Species ''Cercococcyx'' contains the following species: * Whistling long-tailed cuckoo (''Cercococcyx lemaireae'') *Barred long-tailed cuckoo (''Cercococcyx montanus'') * Dusky long-tailed cuckoo (''Cercococcyx mechowi'') * Olive long-tailed cuckoo The olive long-tailed cuckoo (''Cercococcyx olivinus'') is a species of cuckoo in the family Cuculidae Cuckoos are birds in the Cuculidae family, the sole taxon in the order Cuculiformes . The cuckoo family includes the common or European ... (''Cercococcyx olivinus'') Many sources do not recognize ''Cercococcyx lemaireae'' as distinct from ''Cercococcyx mechowi''. References Cuculidae Bird genera Taxa named by Jean Cabanis Taxonomy articles created by Polbot {{Cuculiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Least-concern Species
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-evaluate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forest Robin
The forest robin or orange-breasted forest robin (''Stiphrornis erythrothorax'') is a species of bird from Central and West Africa. It is monotypic in the genus ''Stiphrornis''. It has been placed in the family Turdidae, but is now generally placed in Muscicapidae in the group popularly known as chats. Most taxonomists consider it a single species, but some reviews have recommended recognizing 5 species. It has a total length of around , has dark upperparts, and a throat and chest that, depending on the subspecies, is yellow-orange or deep orange.Collar, N. (2005). Forest Robin (''Stiphrornis erythrothorax''). Pp. 730-731 in: del Hoyo, J., Elliott, A., & Christie, D. eds. (2005). ''Handbook of the Birds of the World.'' Vol. 10. Cuckoo-shrikes to Thrushes. Lynx Edicions, Barcelona. Description It has a total length of around , has dark upperparts, and a throat and chest that, depending on the exact subspecies, is yellow-orange or deep orange. Taxonomy The initial split into mult ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brown Illadopsis
The brown illadopsis (''Illadopsis fulvescens'') or brown thrush-babbler, is a species of bird in the family Pellorneidae.Collar, N. & Robson, C. (2019)"Brown Illadopsis (''Illadopsis fulvescens'')" In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D. A. & de Juana, E. (eds.). ''Handbook of the Birds of the World Alive''. Lynx Edicions, Barcelona. Retrieved 26 November 2019. The species was first described by John Cassin in 1859. It is widely spread throughout the African tropical rainforest. Its natural habitats are subtropical or tropical dry forests and subtropical The subtropical zones or subtropics are geographical zone, geographical and Köppen climate classification, climate zones to the Northern Hemisphere, north and Southern Hemisphere, south of the tropics. Geographically part of the Geographical z ... or tropical moist lowland forests. References {{Taxonbar, from=Q2828915 brown illadopsis Birds of the African tropical rainforest brown illadopsis Taxon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blue-headed Crested Flycatcher
The blue-headed crested flycatcher (''Trochocercus nitens'') is a species of bird in the family Monarchidae, native to the African tropical forest. Taxonomy and systematics Formerly, some authorities have placed the blue-headed crested flycatcher in the genus '' Terpsiphone''. Alternate names include the blue-headed flycatcher and blue-headed paradise-flycatcher. Subspecies Two subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ... are recognized: * Upper Guinea blue-headed crested flycatcher (''T. n. reichenowi'') - Sharpe, 1904: Originally described as a separate species. Found from Guinea to Togo * ''T. n. nitens'' - Cassin, 1859: Found from Nigeria to southern Sudan, Uganda, Democratic Republic of Congo and northwestern Angola References blue-headed crested f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brood Parasite
Brood parasites are animals that rely on others to raise their young. The strategy appears among birds, insects and fish. The brood parasite manipulates a host, either of the same or of another species, to raise its young as if it were its own, usually using egg mimicry, with eggs that resemble the host's. The evolutionary strategy relieves the parasitic parents from the investment of rearing young. This benefit comes at the cost of provoking an evolutionary arms race between parasite and host as they coevolve: many hosts have developed strong defenses against brood parasitism, such as recognizing and ejecting parasitic eggs, or abandoning parasitized nests and starting over. It is less obvious why most hosts do care for parasite nestlings, given that for example cuckoo chicks differ markedly from host chicks in size and appearance. One explanation, the mafia hypothesis, proposes that parasitic adults retaliate by destroying host nests where rejection has occurred; there is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liana
A liana is a long- stemmed, woody vine that is rooted in the soil at ground level and uses trees, as well as other means of vertical support, to climb up to the canopy in search of direct sunlight. The word ''liana'' does not refer to a taxonomic grouping, but rather a habit of plant growth – much like ''tree'' or ''shrub''. It comes from standard French ''liane'', itself from an Antilles French dialect word meaning to sheave. Ecology Lianas are characteristic of tropical moist broadleaf forests (especially seasonal forests), but may be found in temperate rainforests and temperate deciduous forests. There are also temperate lianas, for example the members of the ''Clematis'' or ''Vitis'' (wild grape) genera. Lianas can form bridges amidst the forest canopy, providing arboreal animals with paths across the forest. These bridges can protect weaker trees from strong winds. Lianas compete with forest trees for sunlight, water and nutrients from the soil. Forests without lian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cuckoo
Cuckoos are birds in the Cuculidae family, the sole taxon in the order Cuculiformes . The cuckoo family includes the common or European cuckoo, roadrunners, koels, malkohas, couas, coucals and anis. The coucals and anis are sometimes separated as distinct families, the Centropodidae and Crotophagidae respectively. The cuckoo order Cuculiformes is one of three that make up the Otidimorphae, the other two being the turacos and the bustards. The family Cuculidae contains 150 species which are divided into 33 genera. The cuckoos are generally medium-sized slender birds. Most species live in trees, though a sizeable minority are ground-dwelling. The family has a cosmopolitan distribution; the majority of species are tropical. Some species are migratory. The cuckoos feed on insects, insect larvae and a variety of other animals, as well as fruit. Some species are brood parasites, laying their eggs in the nests of other species and giving rise to the metaphor ''cuckoo's egg'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Birds Described In 1882")
_e_(_Zonotrichia_Capensis_).jpg "Click for more on -> Brood Parasite")
