Grey-throated Sunbird
Encyclopedia
The Grey-throated Sunbird (Anthreptes griseigularis) is a species of bird
in the Nectariniidae family. It is found in a wide range of semi-open wooded habitats in the northern and eastern part of the Philippines
. It is often considered a subspecies
of the Brown-throated Sunbird, but the two differ consistently in measurements and plumage
, and there is no evidence of intergradation
between them. It has not been rated by BirdLife International
(and consequently IUCN), but is generally common and therefore unlikely to be threatened.
Bird
Birds are feathered, winged, bipedal, endothermic , egg-laying, vertebrate animals. Around 10,000 living species and 188 families makes them the most speciose class of tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from...
in the Nectariniidae family. It is found in a wide range of semi-open wooded habitats in the northern and eastern part of the Philippines
Philippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...
. It is often considered a subspecies
Subspecies
Subspecies in biological classification, is either a taxonomic rank subordinate to species, ora taxonomic unit in that rank . A subspecies cannot be recognized in isolation: a species will either be recognized as having no subspecies at all or two or more, never just one...
of the Brown-throated Sunbird, but the two differ consistently in measurements and plumage
Plumage
Plumage refers both to the layer of feathers that cover a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage vary between species and subspecies and can also vary between different age classes, sexes, and season. Within species there can also be a...
, and there is no evidence of intergradation
Intergradation
In zoology, intergradation is the way in which two distinct subspecies are connected via areas where populations are found that have the characteristics of both...
between them. It has not been rated by BirdLife International
BirdLife International
BirdLife International is a global Partnership of conservation organisations that strives to conserve birds, their habitats and global biodiversity, working with people towards sustainability in the use of natural resources...
(and consequently IUCN), but is generally common and therefore unlikely to be threatened.