Tawny-faced Gnatwren
Microbates cinereiventris
Small wrenlike bird that often follows mixed flocks or ant swarms in the forest understory. Difficult to see well; look for tiny size, rufous cheek, white throat, and long straight bill. Similar to Long-billed Gnatwren but tail and bill shorter with generally darker and more contrasting plumage. Listen for harsh chattering calls and clear “peeew.”
识别特征
The tawny-faced gnatwren is 9 to 11 cm (3.5 to 4.3 in) long and weighs 10 to 14 g (0.35 to 0.49 oz). The nominate subspecies has a rusty face with a rufous crown and a thin black stripe behind the eye. A wide black malar stripe ("moustache") separates its face from the white throat and upper breast; the last has thin black stripes. Its back is brown and its underparts are gray. The sexes are alike. The other subspecies differ in the intensity of their cheek and underparts colors, and some do not have the black stripe behind the eye.
分类信息
The International Ornithological Committee (IOC) and BirdLife International (BLI) recognize seven subspecies of tawny-faced gnatwren:<p>However, the South American Classification Committee of the American Ornithological Society (SACC/AOS) and the Clements taxonomy have not accepted the three subspecies that Olson described but include them within M. c. peruvianus.
- 学名
- Microbates cinereiventris
- 命名信息
- (Sclater, PL, 1855)
- 目
- Passeriformes
- 科
- Polioptilidae
- 属
- Microbates
分布与栖息地
The subspecies of tawny-faced gnatwren are distributed thus:<p>The tawny-faced gnatwren generally inhabits the lower strata of wet, humid, primary and secondary forest, mostly below 750 m (2,460 ft) elevation. The exception is M. c. unicus, which is "known only from a single specimen...[collected] on an undetermined date between 1930 and 1943" in a much drier biome.
- 迁徙
- Resident species
行为
The tawny-faced gnatwren's diet is primarily ants and other insects but also includes spiders. It forages through foliage and leaf litter while hopping through undergrowth near the ground. It regularly joins mixed-species foraging flocks but rarely follows army ant swarms.<p>Information on the tawny-faced gnatwren's breeding phenology is sparse. Nesting has been recorded in April in Costa Rica and between December and May in Colombia. The one fully-described nest was constructed of green moss with a soft inner lining. It was attached to the trunk and a limb of a broadleaf shrub and contained two eggs.<p>The tawny-faced gnatwren's song is "a series of soft, clear, plaintive notes, 'teeeeea' or 'teeeéuw'" [1]. Its most common call is "a nasal, complaining 'nyeeeh' or 'nyaaah'" [2]. It also makes a chatter [3].
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Black-bellied Bustard
Lissotis melanogaster
A lithe, medium-sized bustard with black daubs on a mostly tan-colored back. The male has a black belly, neck stripe, throat, and face patch. The female is uniform buff-brown from the belly to the head. In flight, both sexes have white windows in the wings. Singles and pairs inhabit tall grassland and grassy savanna. Its strange display involves the male stretching his neck and making a frog-like “kwoork” croak, and as he retracts his head to the shoulders, follows with a “grrrr” growl and champagne-cork-like “pop” while his head lifts again. He also performs an aerial display with the wings held back rigidly and with a puffed throat exposed.
Greenish Yellow-Finch
Sicalis olivascens
Common in foothills of the Andes, from barren rocky canyons to villages, agricultural terraces, and scrubby hillsides, mainly at lower elevations than Bright-rumped Yellow-Finch, which favors puna habitats. Male is well-named—drab greenish yellow overall. Female is notably drab and nondescript. In all plumages note lack of any streaking or contrastingly bright yellow areas. Compare with longer-winged Greater Yellow-Finch (some overlap of range in winter).
Ornate Melidectes
Melidectes torquatus
A common and fairly large honeyeater of lower and mid-montane forest and clearings. Distinctively patterned with a black back scaled white, white belly with black scalloped flanks, black breast band, black head with large-orange yellow eye wattle, black chin and a small red mark in the base of the bill. Other melidectes co-occur but are larger and none have the white belly and breastband. Call, a loud, hollow “chok!” often followed by a slightly raspy, hollow warble.
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