Zimmerius parvus
The Mistletoe Tyrannulet, *Zimmerius parvus*, is a diminutive and often understated member of the tyrant flycatcher family (Tyrannidae), recognized by its subtle yet distinctive features. Measuring approximately 9-10 cm (3.5-4 inches) in length and weighing a mere 6-8 grams, it is a truly tiny bird. Its plumage is primarily dusky olive-green on the upperparts, contrasting with paler, often whitish underparts that can show a faint yellowish wash on the belly and flanks, especially on the vent....
Found primarily in humid montane and lowland forests, forest edges, and second growth, often preferring the mid-story to canopy. It also adapts to disturbed areas like shade coffee plantations, typically occurring from sea level up to 2,000 meters.
Primarily insectivorous, feeding on small flies, beetles, and caterpillars, gleaned from foliage or caught in short sallies. It also consumes small fruits and berries, especially those of mistletoe plants, playing a role in seed dispersal.
The Mistletoe Tyrannulet is a diurnal and highly active species, spending its days foraging restlessly among foliage. Its foraging strategy is typical of tyrannids: primarily gleaning insects from leaves and twigs, but also sallying out to catch flying insects or hovering to pluck small berries. ...
The Mistletoe Tyrannulet (*Zimmerius parvus* sensu stricto) is a resident species primarily found across northern South America. Its distribution extends from eastern Colombia, including the eastern slopes of the Andes and the Caquetá region, eastward across much of Venezuela, through the Guianas...
Least Concern
- Its scientific name 'parvus' is Latin for 'small,' a fitting descriptor for this diminutive flycatcher. - Despite its name, the Mistletoe Tyrannulet is not closely related to true Old World 'tits' but is a New World tyrant flycatcher. - Its role in dispersing mistletoe seeds is ecologically sig...