鸟类百科大全 > 雀形目 (Passeriformes)

Aegithinidae 该鸟种在中国有分布 本科包含1个属、4个种、16个亚种

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同义词条: Iora

Chinese name: 雀鹎科

Scientific classification

Aegithinidae
For the Australian Aboriginal people of the Sydney region, see Eora

The ioras (Aegithina) are a small clade of four passerine bird species found in India and southeast Asia. They are one of only three bird groups that are entirely endemic to the Indomalayan ecozone. They were formerly grouped with the other two of those groups, the leafbirds and fairy-bluebirds, in Irenidae.

Family: Aegithinidae
Suborder: Passerii
Order: Passeriformes
中文科名: 雀鹎科
中文亚目: 鸣禽亚目
中文目名: 雀形目
Birds of China: Chinese Bird
鸟类百科采用世界鸟类学家联合会(IOC)最新最权威的鸟类分类方法,Version 3.5
Contents

Description

The ioras are small to medium small sized passerines, ranging from 11.5–15.5 cm (4.5–6.1 in) in length. Overall the males are larger than the females. These are reminiscent of the bulbuls, but whereas that group tends to be drab in colouration, the ioras are more brightly coloured. The group exhibits sexual dimorphism in its plumage, with the males being brightly plumaged in yellows and greens. Unlike the leafbirds, ioras have thin legs, and their bills are proportionately longer. Calls are strident whistles; songs are musical to human ears.

Habitat and distribution

Their habitats include acacia scrub, forest edge, and closed forests, as well as agricultural land and (in the Common Iora) gardens. They are generally lowland birds, with most reaching only as high as the submontane forests. They are generally highly arboreal and usually occur in the tree canopy, with only very rare records of this family coming down to the ground. The family is overwhelmingly non-migratory, although in West India there is some evidence that Marshall's Ioras and Common Ioras are partly migratory in the seasonal semi-desert fringe.

Behaviour and ecology

Ioras eat insects and spiders, which they find by nimbly gleaning the leaves of the slenderest outer twigs.

In the two species whose male courtship displays are known, they are elaborate, culminating in the males' parachute-style descent looking like "green balls of fluff". The nests are compact open cups felted to branches with spiderweb. Females lay 2 or 3 eggs, which have pinkish speckles and red and purple lines. They incubate at night; the males, by day. Incubation lasts about 14 days. Both parents are responsible for brooding and feeding the chicks.

Relationship with humans

Ioras will commonly live close to humans and even lives in the suburbs of cites like Singapore. They are mostly not threatened by human activities, although the Green Iora is listed as near threatened by the IUCN, habitat loss is responsible for its decline. Unlike many other passerines they are not common species in the cage bird trade.

Species of Aegithinidae

  • Common Iora, Aegithina tiphia
  • Marshall's Iora, Aegithina nigrolutea
  • Green Iora, Aegithina viridissima
  • Great Iora, Aegithina lafresnayei

References

  1. ^ abc Wells, David (2005), "Family Aegithinidae (Ioras)", in del Hoyo, Josep; Elliott, Andrew; Christie, David, Handbook of the Birds of the World. Volume 10, Cuckoo-shrikes to Thrushes, Barcelona: Lynx Edicions, pp. 278–290, ISBN 84-87334-72-5
  2. ^ abcd Mead, Christopher J.; Wells, D. R. (2003). "Ioras". In Perrins, Christopher. The Firefly Encyclopedia of Birds. Firefly Books. p. 507. ISBN 1-55297-777-3.
  3. Hume,AO (1877). "Remarks on the genus Iora.". Stray Feathers 5: 420-452. http://archive.org/stream/strayfeathersjou51877hume#page/420/mode/1up.

External links

  • Iora videos, photos & sounds on the Internet Bird Collection

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原文链接http://baike.niaolei.org.cn/Aegithinidae

参考资料

[1].  Aegithinidae, from Wikipedia:  http://en.wikipedia.org/wiki/Aegithinidae

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