Long-tailed Fiscal
Lanius cabanisi
A large black-and-white fiscal with a long tail. Note the small white patch at the front of the wing and the white rump, both of which are conspicuous in flight. Males have plain white underparts, while females have a small chestnut patch on the sides. Found in savanna, woodland, and scrub, almost always in small groups of 4-10 individuals. Similar in overall coloration to other fiscals in its range, but easily separated by its larger size. The vocalizations are sliding, metallic-sounding whistles as well as rasps, usually given in chorus by a whole group.
识别特征
Like many shrike species the appearance of the adults is similar between the sexes but strikingly different in juvenile birds. Adult birds are between 26 and 30 cm (10–12 in) in length and weigh between 69 and 80 g (2.4–2.8 oz) (with males averaging slightly heavier). They are large and robust with, as the name suggests, very long graduated tails and typical strong heavy bills. Moreover, L. cabanisi is more compact, and has less slim feet than L. collaris.
分类信息
- 学名
- Lanius cabanisi
- 命名信息
- Hartert, EJO, 1906
- 目
- Passeriformes
- 科
- Laniidae
- 属
- Lanius
分布与栖息地
- 迁徙
- Resident species
行为
The long-tailed fiscal feeds on insects, particularly beetles and grasshoppers, as well as small vertebrates such as lizards, snakes and bird chicks. It occurs as single birds or in small groups and hunts in the typical fashion for a shrike, perched about two metres off the ground where it watches for and then dives onto prey. Prey is usually taken from the ground and sometimes from foliage, but only rarely from the air. The species has been reported to have a mutualistic relationship with red-billed buffalo weavers in Tsavo in Kenya. The long-tailed fiscal benefits from associating with the weavers by snatching grasshoppers and other insects flushed by the foraging weavers, and the weavers benefited from the alarm calls made by the more vigilant fiscals.
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Black Storm-Petrel
Hydrobates melania
Large, dark, angular storm-petrel with a deeply notched tail. Looks long-necked and large-billed. Paler brown upperwing band is usually rather faint and does not reach the leading edge of the wing. Typical flight style is smooth and powerful with deep wingbeats. Uncommon from central California to Peru, often in mixed flocks with other species of storm-petrel. Compare with dark-rumped Leach's and Ashy Storm-Petrels, but note flight style, overall shape, and large bill. Also very similar to Markham's Storm-Petrel, which overlaps offshore Middle and South America. Black is bulkier and larger-billed, with a duller upperwing band, and is usually found closer to shore than Markham's.
Spice Imperial-Pigeon
Ducula myristicivora
A large, stocky pigeon that is found on islands off the shore of Halmahera and far western Papua. Gray head, emerald-green back and wings, blue tail and rusty vent. The eye is red and there is a large knob-like projection on the front top of the bill. Found in a variety of forested habitats, and some wander between islands, sometimes straying to the mainland. Voice a deep, gravelly, 2-note “grrr-waw”, with the second note higher than the first. Similar Spectacled Imperial-Pigeon may co-occur but is separated by its white spectacle around the eye and lack of a knob on the bill.
Crag Chilia
Ochetorhynchus melanurus
Endemic to rocky hillsides and valleys in central Chile; usually found in foothills with low cliffs or crags where it nests in crevices. Runs well on the ground and clambers in bushes. Moves easily across rock faces with its mostly black tail held slightly cocked or fanned and held low to show its bright rusty tail base. Also note the bright white bib, slender straight bill, and rusty wing patch.
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