Myrmotherula unicolor
The Unicolored Antwren (Myrmotherula unicolor) is a diminutive and aptly named songbird, belonging to the Antbird family Thamnophilidae. Measuring approximately 9-10 cm (3.5-3.9 in) in length and weighing a mere 7.5-9 grams (0.26-0.32 oz), it presents an overwhelmingly uniform slate-gray plumage across both sexes, truly embodying its 'unicolor' epithet. Males are typically a solid, deep gray, while females may exhibit a very subtle brownish or ochre wash on their flanks and vent, though sexua...
Resident in humid montane and cloud forests, typically within the dense understory and mid-story, ranging from 800 to 2400 meters (2,600-7,900 feet) elevation.
Primarily insectivorous, feeding on a variety of small arthropods including insects and spiders, which it gleans from foliage and small branches.
Unicolored Antwrens are diurnal and highly active, spending their days meticulously foraging within the dense forest foliage. They employ a 'gleaning' foraging strategy, plucking small arthropods from the undersides of leaves, twigs, and small branches with quick, acrobatic movements. A hallmark ...
The Unicolored Antwren is endemic to the humid montane forests of the Andes in South America, maintaining a resident status throughout its distribution. Its range extends from the Western and Central Andes of Colombia, through both slopes of the Ecuadorian Andes, and into the northern Andes of Pe...
Least Concern
- The Unicolored Antwren is one of the most uniformly colored species within the diverse Myrmotherula genus, making its name particularly apt. - Despite its drab appearance, it is a key component of the vibrant mixed-species foraging flocks common in Andean cloud forests. - It is a 'nuclear speci...