Great Blue Turaco
Corythaeola cristata
Wonderful, cartoonish bird. Note the tall black crest and the red-and-yellow bill. The tail pattern is distinctive in flight: note the black bar across the end of the tail and the pale green sides. Found in rainforest, gallery forest, and lush secondary habitat. Usually in small groups. Gives two distinctive calls, sometimes in conjunction: a deep “jeeeow” and a rapid, cackling series of incredibly loud notes.
识别特征
Generally, the great blue turaco is 70–76 cm (28–30 in) in length with a mass of 800–1,231 g (1.764–2.714 lb). The adult great blue turaco has predominantly gray-blue upperparts with an upright blue-black crest, white chin, yellow-green lower breast and yellow belly darkening to chestnut brown posteriorly. The undertail coverts are chestnut, and the undertail is black and yellowish. The yellow bill has an orange-red tip, the eyes are brown, and surrounded by a ring of black bare skin. The legs and feet are black with yellow soles. The sexes have similar plumage.
分类信息
French ornithologist Louis Pierre Vieillot described the great blue turaco as Musophaga cristata in 1816, before German ornithologist Ferdinand Heine placed it in its own genus in 1860.<p>The great blue turaco is the sole member of the subfamily Corythaeolinae within the turaco family. Its closest relatives are the go-away birds and plantain eaters of the genus Crinifer. The common ancestor of both diverged from the ancestor of all other turaco species.<p>"Great blue turaco" has been designated the official common name by the International Ornithologists' Union (IOC). It is also called blue plantain eater.
- 学名
- Corythaeola cristata
- 命名信息
- (Vieillot, 1816)
- 目
- Musophagiformes
- 科
- Musophagidae
- 属
- Corythaeola
分布与栖息地
The species ranges from Guinea in the west, and east across the sub-Saharan nations to the Imatong Mountains in South Sudan; it also occurs in Uganda, Tanzania and western Kenya, south to the Democratic Republic of Congo and Angola. It inhabits rainforests and gallery forests. It has also adapted to areas cleared by humans and can thrive in these areas.
- 迁徙
- Resident species
行为
The great blue turaco is gregarious, with birds forming small troops of some six or seven individuals.<p>The great blue turaco eats leaves, flowers, as well as fruit of many plant species, including those of the genera Musanga, Cissus, Ficus (such as Ficus capensis) Polyalthia, Heisteria, Dacryodes, Pachypodanthium, Uapaca, Strombosia, Trichilia, Drypetes, Viscum, Beilschmiedia, Coelocaryon, Croton, and Pycnanthus. In Kenya, it has been recorded eating mitzeeri (Bridelia micrantha) in April, loquat (Eriobotrya japonica) in July, guava (Psidium guajava) in September and Cordia africana over November and December. Fieldwork in Rwanda revealed leaves constituted around 25% of its diet, being eaten more often when fruit is less abundant. The species also play a role in seed dispersal as it generally passes seed in its faeces some distance from parent trees.<p>The species nests in trees between 8 and 25 metres (26 and 82 ft) above the ground, and the nest is a platform of sticks. Both sexes incubate the clutch of two (rarely one or three) eggs over 29–31 days. The eggs are white or greenish-white and almost round, measuring 46–50 mm by 41–43 mm (1.8–2.0 in by 1.6–1.7 in).
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Diademed Sandpiper-Plover
Phegornis mitchellii
Unique little shorebird, found very locally in the high Andes on bogs, lakeshores, and gravel bars in rivers and streams. Usually in pairs or family groups; does not mix with other species. Runs and bobs with a nervous gait, and feeds by probing with its weevil-like bill. Flights usually short and low, rather bounding. Despite boldly patterned plumage, it can blend in well with stony substrates. Note black head with a white diadem, a rusty nape, and fine dark barring on underparts.
Malayan Night Heron
Gorsachius melanolophus
Bizarre-looking bird with the squat, staring appearance of a toad. Adult is dark cinnamon-brown with a black crown and a black stripe running from the throat down to the breast. Juvenile is very different, with gray-brown barring all over the body (darkest on the crown). Breeding birds have an especially bright blue facial skin patch between the bill and the eyes; the patch is faded in non-breeders, and yellowish in juveniles. Japanese Night-Heron is similar but averages duller brown with less contrasting black patches. Typically nocturnal and furtive in forested areas, but can frequently be tame and active during the day as well.
Fulvous-faced Scrub-Tyrant
Euscarthmus fulviceps
Very small grayish-brown flycatcher, with brighter orangey color on the face and forehead. Occurs in dry areas and pastures with scattered trees and bushes where it mostly forages near the ground and is typically difficult to spot. It is very noisy, emitting squeaky “plee-plit-irick” calls, sometimes in a duet. Occurs in western Ecuador and northwestern Peru.
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