Australasian Grebe
Tachybaptus novaehollandiae
Small ducklike bird that rides low in the water. In breeding plumage note bright yellow eye, dark face, and rusty brown neck. In non-breeding plumage it is much paler, with the dark cap not extending below the eye (compare with Hoary-headed Grebe). Can be abundant; typically on freshwater ponds and lakes.
识别特征
Both sexes are dark brown above with a glossy-black head and neck and a striking chestnut facial stripe, extending from behind the eye to the base of the neck. The eye is yellow, with a prominent pale yellow face spot below.<p>Both sexes are generally duller, with no chestnut stripe, the face spot whiter, and throat and front grey-white. Similar to non-breeding hoary-headed grebes, which share a similar range.
分类信息
- 学名
- Tachybaptus novaehollandiae
- 命名信息
- (Stephens, 1826)
- 目
- Podicipediformes
- 科
- Podicipedidae
- 属
- Tachybaptus
分布与栖息地
- 迁徙
- Complete migrants
行为
The Australasian grebe is an excellent swimmer and diver, and usually dives immediately when alarmed and swims away under water.<p>They are not strong flyers and will fly distances only at night, presumably to avoid predators. They tend not to leave their home base if there is sufficient food. If disturbed they will dive and re-surface 10–15 metres away rather than fly.<p>Both parents will raise the chicks; however, the male will leave after a couple of months when the chicks are about three-quarters grown. Initially the young will ride on the parents back, hidden between their slightly raised wings. When the chicks begin to dive and feed themselves (at about 10 weeks) the mother may leave too, although mothers have been known to return soon after, apparently to check on the chicks.<p>The parents are very protective and will try to drive away other water birds (ducks, herons) by confronting them and flapping their wings wildly or using their wings to splash water at the intruders.<p>
保护状况
- 种群趋势
- rising
照片
分布
鸟叫声
其他鸟类
Steely-vented Hummingbird
Saucerottia saucerottei
Fairly small dark hummingbird, green overall with dark blue tail. Straight, medium-length bill. Sexes similar. Usually seen feeding singly in flowers along forest edge, shrubby second growth, and gardens. Separated from Emeralds by longer bill, blue-and-white vent, bronze patch on rump, and less deeply forked tail.
Horned Coot
Fulica cornuta
Very large, but rather local coot; rare except at a few lakes in the high Andes set amid barren and rocky surroundings. Often far out on deep-water lakes, where it looks rather uneventful: black overall with a pale yellowish bill. Seen up close, note the bizarre, erectile black “horn” appendage covering the bill base. Juvenile is dark sooty gray with a whitish throat. Builds remarkable nest mounds of stones topped with weeds that look like the tips of huge underwater volcanoes and take months, if not years, to complete.
Scaled Pigeon
Patagioenas speciosa
Handsome large pigeon of humid forest and edge in tropical lowlands. Usually seen flying overhead, less often perched in canopy of tall trees. The male is ruddy brown overall and the female is gray-brown overall. Both have a bright-red, creamy tipped bill and extensive dark scalloping and scaling on the neck, chest, and underparts. In flight, note the whitish belly that contrasts with the blackish underside to the tail.
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