The Ploceidae, or weavers by Phoebe3 2013/08/28 18:45
These are seed-eating birds with rounded conical bills, most of which are from Sub-Saharan Africa, with fewer species in tropical Asia. A few species have been introduced outside their native range. The weaver group is divided into the buffalo, sparrow, typical, and widow weavers. The males of many species are brightly coloured, usually in red or yellow and black, some species show variation in colour only in the breeding season.
Weaver birds, also known as weaver finches, get their name because of their elaborately woven nesta, though some are notable for their selective parasitic nesting habits. The nests vary in size, shape, material used, and construction techniques from species to species.
Materials used for building nests include fine leaf-fibers, grass, and twigs. Many species weave very fine nests using thin strands of leaf fiber, though some, like the buffalo-weavers, form massive untidy stick nests in their colonies, which may have spherical woven nests within. The sparrow weavers of Africa build apartment-house nests, in which 100 to 300 pairs have separate flask-shaped chambers entered by tubes at the bottom. Most species weave nests that have narrow entrances, facing downward.
Many weaver species are gregarious and breed colonially. The birds build their nests together for protection, often several to a branch. Usually the male birds weave the nests and use them as a form of display to lure prospective females. The weaver bird colonies may be found close to water bodies. They sometimes cause crop damage, notably the Red-billed Quelea, reputed to be the world's most numerous bird.
The Black-billed Weaver is a species of bird in the Ploceidae family. It is found in Burundi, Cameroon, Democratic Republic of the Congo, Equatorial Guinea, Kenya, Nigeria, Rwanda, Sudan, Tanzania, and Uganda. This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion. Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion. The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion. For these reasons the species is evaluated as Least Concern.
These are seed-eating birds with rounded conical bills, most of which are from Sub-Saharan Africa, with fewer species in tropical Asia. A few species have been introduced outside their native range. The weaver group is divided into the buffalo, sparrow, typical, and widow weavers. The males of many species are brightly coloured, usually in red or yellow and black, some species show variation in colour only in the breeding season.
Weaver birds, also known as weaver finches, get their name because of their elaborately woven nesta, though some are notable for their selective parasitic nesting habits. The nests vary in size, shape, material used, and construction techniques from species to species.
Materials used for building nests include fine leaf-fibers, grass, and twigs. Many species weave very fine nests using thin strands of leaf fiber, though some, like the buffalo-weavers, form massive untidy stick nests in their colonies, which may have spherical woven nests within. The sparrow weavers of Africa build apartment-house nests, in which 100 to 300 pairs have separate flask-shaped chambers entered by tubes at the bottom. Most species weave nests that have narrow entrances, facing downward.
Many weaver species are gregarious and breed colonially. The birds build their nests together for protection, often several to a branch. Usually the male birds weave the nests and use them as a form of display to lure prospective females. The weaver bird colonies may be found close to water bodies. They sometimes cause crop damage, notably the Red-billed Quelea, reputed to be the world's most numerous bird.
The Black-billed Weaver is a species of bird in the Ploceidae family. It is found in Burundi, Cameroon, Democratic Republic of the Congo, Equatorial Guinea, Kenya, Nigeria, Rwanda, Sudan, Tanzania, and Uganda. This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion. Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion. The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion. For these reasons the species is evaluated as Least Concern.
HandsomeDon 2013/08/29 00:49
Please rate / vote topic here NEW/topic/3203727>topic id: 3203727 Rating / Voting Zone
Please rate / vote topic here NEW/topic/3203727>topic id: 3203727 Rating / Voting Zone
#77 Factual Zone
A forum for article style topics. Share your knowledge of nature, history, science & anything factual.