Yellow tyrannulet | |
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In Costa Rica | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Passeriformes |
Family: | Tyrannidae |
Genus: | Capsiempis Cabanis & Heine, 1860 |
Species: | C. flaveola |
Binomial name | |
Capsiempis flaveola (Lichtenstein, MHC, 1823) | |
Subspecies | |
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The yellow tyrannulet (Capsiempis flaveola) is a very small passerine bird in the tyrant flycatcher family. It breeds from Nicaragua south to northeastern Argentina and southeastern Brazil. It is the only member of the genus Capsiempis, but its taxonomy is uncertain, and it has been allocated to at least three other genera in the past.
This species is found in thickets, forest and streamside edges, dense second growth, and bushy pastures or clearings. The cup nest is made of plant fibre and grass blades, decorated outside with moss. It is placed 2–7 m high in a tree, shrub, or maize plant. The typical clutch is two white eggs, usually unmarked or with very light rufous speckles.
The yellow tyrannulet is 10.5-11.4 cm long, weighs 8 g, and with its slender build and small bill resembles a tiny vireo or warbler. Its upperparts are olive-green and the underparts are bright yellow. The head has whitish or pale yellow supercilia. The wings and tail are dusky brown with weak yellow feather-edging, and there are two yellowish wing bars. Sexes are similar, but young birds are browner above and paler yellow below. The call is a soft pewik and the duetted song is a rhythmic pee-tic-keek. There is some geographical variation in both appearance and vocalisation.
Yellow tyrannulets are active birds, seen in pairs or family groups feeding on insects, spiders and small berries. The prey is gleaned from foliage or taken in short sallies.
The fuscous flycatcher is a small passerine bird in the tyrant flycatcher family, and the only member of the genus Cnemotriccus. It breeds from Colombia and Venezuela south to Bolivia, Paraguay and Argentina, and on both Trinidad and Tobago. The fuscous flycatcher ranges in northern and eastern South America, including the entire Amazon Basin, and the Guianas; also all of Brazil except the very southeastern border area with Uruguay.
The southern beardless tyrannulet is a small passerine bird in the tyrant flycatcher family. It breeds from Costa Rica through South America south to Paraguay, Bolivia, and Argentina.
The bran-colored flycatcher is a small passerine bird in the tyrant flycatcher family. It breeds from Costa Rica through South America to Bolivia, Uruguay, and Argentina. It also occurs on Trinidad.
The torrent tyrannulet is a small bird of the tyrant flycatcher family. It breeds from Costa Rica south to northern Bolivia and northwestern Venezuela.
The yellowish flycatcher is a small passerine bird in the tyrant flycatcher family. It breeds in highlands from southeastern Mexico south to western Panama.
The black-capped flycatcher is a very small passerine bird in the tyrant flycatcher family. It is endemic to the highlands of Costa Rica and western Panama.
The Guatemalan tyrannulet or paltry tyrannulet, is a very small passerine bird in the tyrant flycatcher family. It occurs in southern Mexico, Guatemala, El Salvador and southern Belize.
The mistletoe tyrannulet is a very small bird, a passerine in family Tyrannidae, the tyrant flycatchers.
The mountain elaenia is a small passerine bird in the tyrant flycatcher family. It breeds in highlands from Guatemala to Colombia and western Venezuela. The scientific name celebrates the German physician and naturalist, Alexander von Frantzius.
The northern beardless tyrannulet is a small passerine bird in the tyrant flycatcher family. It breeds from southeasternmost Arizona and Texas of the United States through Mexico and Central America to northwestern Costa Rica.
The tufted tit-tyrant is a species of bird in the tyrant flycatcher family Tyrannidae. This species is found in western South America; its range stretches from southern Colombia south along the Andes mountains to Tierra del Fuego. It prefers to live in upper montane forests and shrublands; however, it is a habitat generalist and can be found across a wide range of ecosystems. The tufted tit-tyrant has three subspecies, including the nominate subspecies Anairetes parulus parulus, A. p. aequatorialis, and A. p. patagonicus, and is very closely related to the Juan Fernández tit-tyrant. It is very small with a distinctive and conspicuous crest. The bird's head is black overall with white supraloral and postocular stripes. Its dull grayish-brown back contrasts with its white throat and breast that are covered with black streaks and pale, unmarked yellow underbelly. There are few noticeable differences in plumage between the subspecies. It is a vocal flycatcher with a broad repertoire of songs.
The Amazonian Inezia or Amazonia Tyrannulet is a tiny tyrant-flycatcher bird that belongs to the Tyrannidae family found in riverine forests and scrub, including on islands, from southwest Venezuela and neighboring southeast Colombia south through the Amazonian region to northern Bolivia. Its natural habitats are subtropical or tropical dry forests, subtropical or tropical moist lowland forests, and heavily degraded former forest. Its prominent white supraloral and eye-ring, as well as its extremely "spotty" double wingbars, are what most easily set it apart. Olive-green to pale yellow makes up the majority of the rest of the feathers. With their tails held cocked, the species is frequently found in pairs, usually low to the ground. However, very little else about the biology and behavior of this tyrannulet has been documented to this point. The Amazonian Tyrannulet and the allopatric Pale-tipped Tyrannulet of northern South America were once thought to be conspecific, however vocalizations and, to a lesser extent, morphology clearly distinguish them from one another.
The southern mouse-colored tyrannulet is a species of bird in the tyrant flycatcher family Tyrannidae. It occurs in a wide range of scrubby and wooded habitats in tropical and subtropical South America, being absent from the southernmost part of the continent, the high Andes and dense rainforest. It is generally common, but its small size and dull plumage results in it often being overlooked – or at least not identified, as it resembles several other tyrant flycatchers.