Pale-vented Pigeon
Patagioenas cayennensis
Large pigeon of marshy savannas, riversides, open areas with scattered trees, locally even in towns, such as Villahermosa, Mexico. Gray head contrasts with pinkish body, and whitish belly does not contrast strongly with plain grayish tail; compare darker Red-billed Pigeon, which often occurs in same areas but prefers drier and more forested habitats. Also note black bill of Pale-vented, and subtly distinctive song: after long introductory coo, repeated phrase is typically a 3-syllable "who’koo-koo", unlike 4-syllable "oo’koo-koo-koo" of Red-billed.
识别特征
The pale-vented pigeon is 30–32 cm long and weighs normally 230–250 g. Adult males have a mainly dull purple head, breast and upperpart plumage, with copper glossing on the nape and a whitish throat. The lower back and tail are dark grey and the lower underparts are pale grey. The bill is black and the legs, iris and eyering are red. The female is similar, but duller than the male, and immatures are greyish-brown, very dull, and mainly greyish brown.<p>The southern subspecies P. c. andersoni has white lower underparts, rather than the pale grey of nominate P. c. cayennensis.<p>The call is a row of soft kuk kuk croo-ooos; the initial short kuk is characteristic for the "cayennensis group" of Patagioenas. Altogether, this species' song is intermediate between that of its close relatives the plain (P. inornata) and red-billed pigeons (P. flavirostris).<p>It may in the field resemble a scaled pigeon (P. speciosa), which has a similar display flight. These two large species are also the only pigeons in their range which are often seen flying in the open away from forests. But of course P. cayennensis lacks the scaly appearance, and the calls and appearance from close by indicate that the two are not particularly close relatives among their congeners.
分类信息
- 学名
- Patagioenas cayennensis
- 命名信息
- (Bonnaterre, 1792)
- 目
- Columbiformes
- 科
- Columbidae
- 属
- Patagioenas
分布与栖息地
- 迁徙
- Resident species
行为
The pale-vented pigeon is common at forest edges, riverbanks, and other partially open areas with some trees. It feeds mainly on small fruits, berries and seed. This is a fairly solitary bird, but may form small flocks at drinking areas. Its flight is high, fast and direct, with the regular beats and an occasional sharp flick of the wings which are characteristic of pigeons in general.<p>It also has a breeding display with a semi-circular glide down to its original perch. It builds a small twig nest in a small tree, and normally lays one white egg.<p>Widespread and common, it is classified a species of least concern by the IUCN.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Yellow-spectacled Heleia
Heleia wallacei
A small green songbird with a bright yellow head and a distinctive orange forehead smudge. Gray belly separates yellow throat and yellow base to undertail. Adults dark-eyed, juveniles pale-eyed. Pairs and groups inhabit dry, open areas in the lowlands and lower hills, such as savanna, scrub, forest patches, and thickets, avoiding dense forests. Restricted to the Lesser Sundas. Separated from Lemon-bellied, Ashy-bellied, and Warbling White-eyes by lack of a white eye-ring and presence of an orange forehead patch. Song is a descending stuttering warble. Also gives jarring churrs and twittering notes.
Angola Lark
Amirafra angolensis
A medium-sized, stocky lark with a long heavy bill and scalloped upperparts, giving it a scaly appearance. The short rufous crest can be raised; face, eyebrow, and underparts are tawny with fine streaking on the upper breast. In flight it has white outer tail feathers. Pairs are locally common residents in montane grassland, dambos (seasonally flooded wetlands), and moist grassland. The aerial display and song are diagnostic; the male rises some 25m into the air while singing a melodious trilling song that rolls up-and-down in pitch “zi-zi-zu-zu-zu-zi-zi-zi”, before parachuting to the ground. Also calls from mounds before making a short low hop-flight with associated “prrt-prrt” sounds of mechanical wing-rattling. Also, some mimicry and loud “tew-chi-chi-tew” calls. Angola Lark is smaller and darker than Rufous-naped and larger than Flappet Lark, with a more robust bill and paler underparts.
Green-barred Woodpecker
Colaptes melanochloros
Medium-sized woodpecker found in lightly forested habitats and more open areas with scattered trees. Yellow-green above with black spotted bars on the wings, back, and tail and spotted below. Note the striking face pattern with a pale eyemask, black forehead, and red hind crown. Males have a red “moustache,” which is black on females.
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