Hispaniolan Emerald
Riccordia swainsonii
An inhabitant of moist montane woodlands including coffee plantations. The long-tailed male is distinctively entirely iridescent green and the base of the bill is red. The female is metallic green above, dingy white below, and has a relatively long, forked tail. The Antillean Mango is shorter tailed (wings just about even with tail tip when perched) and has a distinctly down-curved bill. The Vervain Hummingbird is much smaller and shorter billed than the Hispaniolan Emerald. Most common vocalization is a sharp “tic,” most often given in a prolonged series at about five “tics” per second.
识别特征
Male Hispaniolan emeralds are 9.5 to 10.5 cm (3.7 to 4.1 in) long and females 8.5 to 9.5 cm (3.3 to 3.7 in). The species weighs between 2.5 and 5 g (0.088 and 0.18 oz). Both sexes have a small white spot behind the eye. Males have a bill whose mandible is red and the maxilla black, and that is slightly decurved at the outer end. Its forehead, crown, and cheeks are dull dark brown; the rest of its upperparts and flanks are dark green with a bronze tinge and the uppertail coverts are dark green. Its throat is iridescent green with a large black patch below it. The rest of its underparts are a darker green than the upperparts with dark green undertail coverts. The tail is deeply forked and dark brown. The female's bill is more deeply decurved than the male's. Its head and upperparts are like the male's. Its underparts are gray that is darker on the belly and undertail coverts. The outermost pair of tail feathers have a gray base, a wide dark brown band near the end, and a white tip. The next pair inward is mostly dark grass green becoming black at the end. The inner three pairs are green.
分类信息
The Hispaniolan emerald was formerly placed in the genus Chlorostilbon. Based on a molecular phylogenetic study published in 2014 and a 2017 publication, the North American Classification Committee of the American Ornithological Society, the International Ornithological Committee (IOC), and the Clements taxonomy moved it to the resurrected genus Riccordia. However, as of 2020 BirdLife International's Handbook of the Birds of the World (HBW) retained it in Chlorostilbon.<p>The Hispaniolan emerald is closely related to the Cuban emerald (Riccordia ricordii) and the Puerto Rican emerald (R. maugaeus). It is monotypic.
- 学名
- Riccordia swainsonii
- 命名信息
- (Lesson, RP, 1829)
- 目
- Apodiformes
- 科
- Trochilidae
- 属
- Riccordia
分布与栖息地
The Hispaniolan emerald is found in both countries of its namesake island, the Dominican Republic and Haiti. It inhabits the interior and edges of dense montane rainforest, scrublands, and coffee plantations. In elevation it mostly ranges between 300 and 2,500 m (980 and 8,200 ft) but is found as low as sea level and occasionally higher than 3,000 m (9,800 ft).
- 迁徙
- Resident species
行为
The Hispaniolan emerald is generally sedentary. However, it occasionally wanders to high elevations and perhaps regularly moves to lower ones after the breeding season.<p>The Hispaniolan emerald forages for nectar by trap-lining, visiting a circuit of flowering plants. It feeds anywhere from 3 to 18 m (10 to 60 ft) above the ground. In addition to nectar, it feeds on insects captured by hawking from a perch.<p>The Hispaniolan emerald's breeding season extends from January to June and occasionally as late as August. It makes a cup nest of moss and plant fibers bound with spiderweb and covered with lichen. It often places it in shrubs within 2 m (7 ft) of the ground but sometimes as high as 10 m (30 ft). The female incubates the clutch of two eggs for 15 to 16 days and fledging occurs 20 to 22 days after hatch.<p>The Hispaniolan emerald makes "[s]harp metallic chipping notes", sometimes in a long series.
保护状况
- 种群趋势
- unknown
照片
分布
鸟叫声
其他鸟类
Alder Flycatcher
Empidonax alnorum
Small flycatcher, extremely similar to several other species. Prefers clearings and boggy areas, often with patches of alders. Grayish-olive above and pale below with thin white eyering. Wings dark with bold white wingbars. Nearly identical to Willow Flycatcher; once considered the same species. Also compare with Least Flycatcher, which is very similar but has slightly shorter wingtips and a bolder eyering. Best identified by voice: song is a rolling, rough "freeBEER;" call is a clear "pip." Silent birds, especially in migration, often best left unidentified.
Malagasy Brush-Warbler
Nesillas typica
Medium-sized brown bird with a long, spiky tail. Found in a wide variety of moist and woody habitats, including rainforest, wet scrub, plantations, and gardens. Absent or very local in much of west and southwest Madagascar. Skulks in thick undergrowth. Incessantly given call is a Geiger counter-like ticking. Darker brown than Subdesert Brush-Warbler, with a lower-pitched call and little overlap in range. Similar to Madagascar Swamp-Warbler, but has less distinct breast streaking and white eyebrow, and is generally found in scrub rather than marsh.
Dull-mantled Antbird
Sipia laemosticta
Medium-sized antbird with plump body and short tail. Gray body and brown back. Look for red eye and small white spots on shoulder. Female similar to male but slightly paler. Found inside forest, always close to the ground and usually in gullies near streams. Usually in pairs. Song is a good clue to its presence: listen for high, thin whistles, the first few higher and the last several dropping in pitch.
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