Frances's Sparrowhawk
Tachyspiza francesiae
Typical small sparrowhawk with a gray or brown back and pale underparts. Females are much larger than males and show reddish barring below. Smaller male is pale-chested. Found in open forest, scrub, plantations, and even villages. Usually seen sitting on an open perch or dashing through the trees; rarely soars. Small, pale male is distinctive, but female and brownish immature very hard to separate from some Madagascar Sparrowhawks. On Frances’s Sparrowhawk, look for fine bars on the undertail, reddish chest barring, a single dark stripe down the center of the throat, and a short central toe.
识别特征
Frances's sparrowhawk is grey with a light belly. It has orange eyes and feet, a yellow cere and a black beak. The size of each hawk varies from 28 – 35 cm for a male and 104 – 140 g for a female 112 – 185 g and their wingspan is around 40 – 54 cm. The races from the Comoro Islands are smaller and more rufous than the nominate from Madagascar.<p>Both sexes of the Anjouan sparrowhawk resemble the male of the nominate race of Frances's sparrowhawk from Madagascar, but are markedly smaller and lack most of the barring on the underside. Males have a wingspan of 135–149 millimetres (5.3–5.9 in) and a tail 99–188 mm (3.9–7.4 in) long, while females are larger, having a wingspan of 155–163 mm (6.1–6.4 in) and a tail length of 113–125 mm (4.4–4.9 in). Both sexes have white underparts, grey upperparts, dark-greyish wings, and dark barring on the tail.
分类信息
- 学名
- Tachyspiza francesiae
- 命名信息
- Smith, A, 1834
- 目
- Accipitriformes
- 科
- Accipitridae
- 属
- Tachyspiza
分布与栖息地
Frances's sparrowhawk is found in Madagascar and the Comoro Islands. They live in dense forests, large gardens, parks and coconut plantations. They live mostly on the edges of forests.
- 迁徙
- Resident species
行为
The hawks feed on a range of prey including mammals, birds, lizards, frogs, and large insects. They knock small mammals, lizards and frog off trees or trunks of trees to shock them and then make the kill. They generally attack flying insects and birds flying straight towards the prey and catching them in mid-flight.<p>The sparrowhawks build large stick nests in the upper fork of large trees usually 5 - 15m from the ground. The location of the nests change from year to year and they usually breed in October to December the clutch varies from 3 - 4 eggs they measure around 37 x 29 mm but the average survival rate of the eggs is 1.5. Eggs usually have different and unique marking on them. The eggs are usually a greyish-white.
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Checker-throated Woodpecker
Chrysophlegma mentale
Ornate medium-sized woodpecker. Moss-green with blood-red wings and neck. Back edge of head and neck are brightened by a sunny yellow crest. Black-and-white “checker” throat is not particularly obvious. Prefers mature lowland and hill forests; seldom seen in secondary growth or sparsely-vegetated edge. Typically forages at mid-levels of forest, frequently singly but also in mixed flocks or pairs. Gives loud, insistent “nyeh” notes and a strident “choo-yik!”
White Tern
Gygis alba
A medium-sized tern with entirely white plumage, a slightly forked tail, and glittering inky pools for eyes. The bill is black with a blue base. Graceful and buoyant in flight. Breeds in trees and both natural and artificial ledges on coral islands. Sometimes flies very high in pairs or trios. Often seen offshore from boats, though most frequently encountered foraging over inshore waters.
Purple-tailed Imperial-Pigeon
Ducula rufigaster
A fairly large pigeon of lowland and foothill rainforest interior. Pale pinkish head, orange underparts, metallic emerald green wings and back, and a purple rump. It is usually solitary, difficult to see and does not usually fly above the canopy. Similar to Rufescent Imperial Pigeon, but Purple-tailed is found at lower elevations and has an obvious pale gray tail band. Call, two introductory “tuk-tuk” notes followed by a long, rather out of tune, rising then falling “ooo-woo-ooo”
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