Beaudouin's Snake-Eagle

Circaetus beaudouini

Chunky dark brown raptor with a white belly marked by thin bars. Immatures are brown when perched, and show rufous patches in the underwing in flight. Found in savanna habitats. Soars frequently and sometimes hovers. Very similar to Short-toed Snake-Eagle, but has darker upperparts and narrower dark bars on the belly; the front of the underwings looks white and unbarred in flight. Immature similar to immature Black-breasted and Short-toed Snake-Eagles, but identified by the rufous patches on the underwings.

识别特征

The bird has a wingspan of 170 cm (67 in). A large snake eagle with grey-brown upperparts, including the head and chest, contrasting with white underparts barred with brown and white vent. It has a black bill and large, bright yellow eyes with long pale grey, unfeathered legs. Juveniles are all dark.

分类信息

学名
Circaetus beaudouini
命名信息
Verreaux, J & des Murs, 1862
Accipitriformes
Accipitridae
Circaetus

分布与栖息地

In a narrow band from Guinea-Bissau, Senegal and Gambia through southern Mali and Burkina Faso, Niger, northern Nigeria and Cameroon, southern Chad, Central African Republic and South Sudan. It has been recorded in Uganda but its status is uncertain in Kenya. There may be some nomadic movements, it appears to move southwards during the dry season and northwards during the rains. Open woodlands, wooded savanna and cultivation.

迁徙
Nomadic movement

行为

Normally seen on a prominent perch such as a telegraph pole or dead tree, as it is a sit-and-wait hunter, rather than in flight but generally behaviour is poorly known. The diet mainly consists of snakes and other small vertebrates. It breeds in November to March in West Africa in a small stick nest at up to 25 m (82 ft) in the top of a tree. The clutch is usually a single egg. Incubation period is probably around 45 days with a fledging period which may be a further 70 days.

保护状况

种群趋势
declining

照片

分布

其他鸟类

Brown Emutail

Brown Emutail

Bradypterus brunneus

Medium-sized, rich-brown bird with a weird spiky tail. Scarce and incredibly shy bird that is unlikely to be seen unless you’re expressly searching for it. Madagascar endemic that is found in eastern rainforest at middle and high elevations. Skulks in the understory, with a strong preference for dwarf bamboo. Loud song is a couple of short “swee” notes followed by a long, dry rattle. Far less likely to be seen than the common Madagascar Brush-Warbler. In case of any confusion, look for the Brown Emutail’s warmer brown coloration and wispy tail. 

Golden-crowned Kinglet

Golden-crowned Kinglet

Regulus satrapa

Tiny, hyperactive songbird usually found in conifer trees. Look for black stripes on the head and bold wing pattern. The namesake golden crown is usually just a small stripe, but can be flared into an expressive fiery-orange crest when agitated. Breeds in coniferous forests, usually staying high in trees. In migration and winter, often joins mixed flocks of other songbirds in a wider variety of wooded habitats. Very active; often hovers and flicks wings as it forages. Listen for extremely high-pitched call notes.

Saddle-billed Stork

Saddle-billed Stork

Ephippiorhynchus senegalensis

A tall, lanky, black-and-white stork with a unique red, yellow, and black bill. The male has dark-brown eyes, and the female has yellow eyes. In flight, the bird’s massive size, and the dark bands in the center of the white wings are diagnostic. Scarce but conspicuous; mostly resident but can be partially nomadic in parts of the range. Found singly or in pairs at rivers and large undisturbed wetlands, foraging for favorites like catfish, but it will also take frogs, birds, and insects.

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