Dwarf Bittern

Botaurus sturmii

Tiny, compact, dark bittern. Slate-gray on the upperparts and pale on the underparts, which have thick dark streaks. Found in heavily vegetated wetland habitats, including ponds, swamps, and sometimes mangroves. Uncommon, shy, and secretive. Call is a short series of low “hraw” notes. Somewhat similar to Striated Heron, but smaller, shorter- and thicker-necked, and darker on the back.

识别特征

It is a small bittern, and the same size as the little bittern, to which it is closely related.

分类信息

学名
Botaurus sturmii
命名信息
(Wagler, 1827)
Pelecaniformes
Ardeidae
Botaurus

分布与栖息地

It is found in Angola, Benin, Botswana, Burkina Faso, Burundi, Cameroon, Central African Republic, Chad, Republic of the Congo, Democratic Republic of the Congo, Ivory Coast, Equatorial Guinea, Eswatini, Ethiopia, Gabon, Gambia, Ghana, Guinea, Kenya, Liberia, Malawi, Mali, Mauritania, Mozambique, Namibia, Niger, Nigeria, Rwanda, Senegal, Sierra Leone, Somalia, South Africa, Spain (the Canary Islands), Sudan, Tanzania, Togo, Uganda, Zambia, and Zimbabwe. It is a rare vagrant in the Western Palearctic (which consists of Europe, North Africa and the Middle East), with several sightings in the Canary Islands. Two individual were observed on the island of Fuerteventura in the Canary Islands in the winter of 2017.

迁徙
Complete migrants

保护状况

It is designated least concern.

种群趋势
unknown

照片

分布

其他鸟类

Crimson Fruitcrow

Crimson Fruitcrow

Haematoderus militaris

Easily-identified cotinga; the only large red other than macaws likely to be seen in rainforest canopy. Male is mostly shining red. Female is browner but told by size and shape; also note large bill. Rare and local in canopy of humid lowland forest; seems to be somewhat nomadic. Usually seen perched high in bare branches. Feeds on fruit that it plucks in short sallies, like a giant manakin. Call is a short, gruff bark, somewhat like call of Pompadour Cotinga but much deeper; easily overlooked.

Plumbeous Kite

Plumbeous Kite

Ictinia plumbea

Slender, long-winged summer migrant to tropical lowlands. Found in humid forest and adjacent semiopen areas with tall trees. Hunts in flight, soaring lazily on long, rather pointed wings and snatches insects with its talons. Dark gray overall (plumbeous means lead-colored) with a slightly paler head. On perched birds, the tips of the wings project well beyond the short tail. In flight, note the orange patches on the underside of the wingtips. Immature has whitish underparts with dark streaking.

Ashy Drongo

Ashy Drongo

Dicrurus leucophaeus

A slim, medium-sized drongo with bright red eyes and gray plumage that is almost black in the western parts of its range and quite pale in the eastern parts of its range; eastern birds also often have an oval-shaped pale facial patch. It has a long slim tail with a deep fork. Common in wooded habitats where it sallies for insects and aggressively chases other birds that may compete for food or nectar. Most birds migrate south every winter. Similar to Black Drongo, but slimmer and usually in different habitats. Calls include harsh and sweet notes, and can mimic some bird species poorly.

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