Topknot Pigeon
Lopholaimus antarcticus
A large solid pigeon with a unique waved crest on the back of the head. Almost entirely gray with darker wing feathers. Tail is dark gray with a broad pale band. Typically seen feeding on fruit high in rainforest canopy trees. Also, often observed flying in large flocks at high altitudes over other habitats – look for the banded tail in flight.
识别特征
The topknot pigeon is a large predominately slate-grey bird, 40–46 centimetres (16–18 in) in length. The back, coverts and upper secondaries are a darker slate-grey with black quills. The primaries are black, the remaining body in a lighter slate-grey in colour. The chest and hind neck are notched, showing dark bases giving a streaked appearance.[2] The tail is black crossed with a board grey band. The crest is grey from the cere to the forehead, and russet brown on the crown with black sides. The mandibles are red with a brown tip, the protuberances at the base of the mandibles are bluish-green. The tarsals and feet are purplish red. The sexes are similar in description. However, Males have larger crest and lack some of the streaking on the chest. Juveniles are like females but the chest is mottled not streaked, the crest is smaller, with the cere and forehead being light brown, the crown grey. Tarsals and feet are reddish brown. The iris is yellow-golden with a bright red outer band. In fledglings the iris is brown.[2]
分类信息
English naturalist George Shaw described the topknot pigeon as Columba antarctica in 1793.<p>The topknot pigeon is sister taxon to a lineage that gave rise to the mountain pigeons (Gymnophaps) of New Guinea, the common ancestor of both diverged from a lineage that gave rise to the kererū and Chatham pigeon.<p>"Topknot pigeon" has been designated the official common name by the International Ornithologists' Union (IOC); John Gould noted in 1848 that it had been given this name by the colonists of New South Wales. It is also known by the name of "flock pigeon".
- 学名
- Lopholaimus antarcticus
- 命名信息
- (Shaw, 1793)
- 目
- Columbiformes
- 科
- Columbidae
- 属
- Lopholaimus
分布与栖息地
Found from the Cape York Peninsula in Queensland to the central south coast of New South Wales. These pigeons cover great distances in search of fruit bearing trees suddenly appearing in areas where they have not been seen for many years and will occasionally move beyond their normal southern range limit, into eastern Victoria.[2] Historic records from 1953 show the topknot pigeon as an "accidental" species to Tasmania with a specimen taken at Spreyton near Devonport. This bird was one of a flock of 9-10 birds feeding on cherries. Previous to this sighting, the only other recording was in 1907 when two specimens were taken near St. Helens, east coast of Tasmania. The Spreyton specimen is held in the Tasmania Museum, Collection Number 13184/B2703.
- 迁徙
- Nomadic
行为
Migration pattern: Nomadic.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
其他鸟类
House Sparrow
Passer domesticus
Widespread and abundant in cities, neighborhoods and farms. Avoids dense woods. Flocks cluster in dense bushes, bustling around and chattering to one another. Males have smart black bibs, bright rufous napes, and stunningly patterned wings with brilliant buffs and browns. Underparts are pale pearly-gray. Females are plain brown with cute face and lighter eyebrow. Native to Eurasia; introduced to much of the rest of the world.
Spot-winged Antbird
Myrmelastes leucostigma
Medium-sized antbird with a chunky shape and a medium-length tail. Male is uniform medium-gray with white spots on the wings. Female is brown above with a mostly gray head and rufescent underparts; also note wing spotting. This antbird lacks bare skin around the eye. Pairs skulk in the understory of mature forest. Wide range across the lowlands of northern South America, east of the Andes, up to around 1,000 m.
Parker's Spinetail
Cranioleuca vulpecula
Rusty above with pale brown underparts, a whitish throat, and a long spiky tail. Occurs on shrubby river islands favoring early successional vegetation. Song is an accelerating and descending series of “tew” notes, ending in a trill. The rather similar Rusty-backed Spinetail has buffy underparts, a less distinct eyebrow, and a different song, and occurs in seasonally flooded forests and gallery forests.
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