African Gray Woodpecker
Dendropicos goertae
A mid-sized woodpecker with a yellow-green back and gray underparts. The crown is red in males and plain gray in females. Can show a small orange or bright red patch on the center of the belly. Found in a wide variety of habitats including savanna, woodland, gardens, farmland, mangroves, forest edge, and gallery forest. The main call is an agitated series of rising “k-k-kree” calls. The range overlaps slightly with the very similar Mountain Gray Woodpecker. Distinguished by the barring on the wing and undertail and the lack of a large, deep red belly patch.
识别特征
Like other woodpeckers, this species has a straight pointed bill, a stiff tail to provide support against tree trunks, and zygodactyl or “yoked" feet, with two toes pointing forward, and two backward. The long tongue can be darted forward to capture insects. This bird is 20 cm (7.9 in) in length. It is a typical woodpecker shape, and has unmarked green upperparts and a pale grey head and underparts. The rump is red, and there is a small red belly patch. The short tail is blackish. The adult male grey woodpecker has a red crown. Females have a plain grey head, lacking the red crown. Young birds are like the female, but the reds are paler, and there may be some flank barring.
分类信息
The African grey woodpecker was described by the German zoologist Philipp Ludwig Statius Müller in 1776 from a specimen collected in Senegal. He coined the binomial name Picus goertae. The specific epithet is from the French polymath Comte de Buffon who noted that "Goërtan" was the name used for the species in Senegal. The species was also illustrated in a set of plates that accompanied Brisson's work. The African grey woodpecker is now placed in the genus Dendropicos that was introduced by the French ornithologist Alfred Malherbe in 1849.<p>Five subspecies are recognised:<p>The African grey woodpecker and the eastern grey woodpecker (Picidae spodocephalus) were formerly treated as conspecific.
- 学名
- Dendropicos goertae
- 命名信息
- (Müller, PLS, 1776)
- 目
- Piciformes
- 科
- Picidae
- 属
- Dendropicos
分布与栖息地
The African grey woodpecker is native to tropical parts of western and central Africa. Its range includes Angola, Benin, Burkina Faso, Burundi, Cameroon, Central African Republic, Chad, Congo, Democratic Republic of Congo, Equatorial Guinea, Eritrea, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Kenya, Liberia, Mali, Mauritania, Niger, Nigeria, Rwanda, Senegal, Sierra Leone, South Sudan, Sudan, Tanzania, Togo and Uganda. Its typical habitat includes woodland, savannah with isolated trees, copses of larger trees, riverside forest and pasture.
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: stable.
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Andaman Cuckooshrike
Coracina dobsoni
A stocky, medium-sized cuckooshrike with a heavy, dark bill. Similar to Large Cuckooshrike, but the Andaman Cuckooshrike is slightly smaller, slimmer, and darker gray on the upperparts; lacks white tail tips; and has strong barring all through the underparts. Inhabits dense forests, where it is uncommon and sticks to the high canopy.
Vega Gull
Larus vegae
A large, sturdy gull of East Asia. Adults have a fairly pale gray back, pale eye, and dull pinkish legs. Takes four years for immatures to progress from mostly brown to fully white and gray adult plumage; intermediate plumages are often mottled and messy. Extremely variable plumage can make identification tricky. Occurs inland and along the coast, frequenting river mouths, harbors, beaches, lakes, and ponds. Often forms flocks with other gulls. Back color of adults generally a shade darker than that of American Herring Gull. Very similar to Mongolian Gull, and separation is tricky, but has a larger head and bill; adults also generally have pinker legs.
Blue-whiskered Tanager
Tangara johannae
Rare tanager restricted to lowland and foothill rainforest in northwestern Ecuador and western Colombia. Brilliant emerald-green with black face and throat marked with short blue stripes. Similar in color to Emerald Tanager, but note the characteristic black bib and blue whiskers. Typically encountered at middle to upper levels of the forest, and often joins mixed-species flocks.
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