
Image via Macaulay Library
Olivaceous Elaenia
- Scientific name
- Elaenia mesoleuca
- Family
- Tyrannidae
- Conservation status
- Least concern
- Habitat
- Forest mixed
- Wing shape
- Broad
- Tail shape
- Notched
Where it came from
The Olivaceous Elaenia, or Elaenia mesoleuca, is a passerine bird belonging to the Tyrannidae family, a group commonly known as tyrant flycatchers. It is native to the Atlantic Forest regions of South America, primarily spanning parts of southeastern Brazil, northeastern Argentina, and eastern Paraguay. Evolutionary biologists and ornithologists classify it within a genus known for subtle plumage variations, which has historically made the identification of specific species within the complex challenging for field researchers.
The species was first described in the 19th century as part of the broader effort to catalog the rich biodiversity of the Neotropical realm. Its physical characteristics, including its characteristically broad wings and notched tail, are functional adaptations to its environment, allowing for agile movement through the canopy as it forages for fruit and small insects. Like many species in the genus, the Olivaceous Elaenia is recognized for its vocalizations, which serve as a primary indicator for field identification by ornithologists studying its population dynamics and habitat preferences.
Written by Pi, the helpful collecto.rs AI
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About Olivaceous Elaenia
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