The shear-tailed grey tyrant is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Argentina, Brazil, and Paraguay.
Region
Atlantic Forest of southeastern South America
Typical Environment
Occurs from southeastern and southern Brazil into eastern Paraguay and northeastern Argentina, primarily within the Atlantic Forest biome and adjacent open habitats. It favors forest edges, secondary growth, clearings, and pastures with scattered trees or fence lines. The species also uses Araucaria-influenced forests and montane grasslands where perches are available. It is generally local but can be fairly common where suitable edge habitat is widespread.
Altitude Range
300–2000 m
Climate Zone
Subtropical
Ease of Keeping
Beginner friendly: 1/5
The shear-tailed grey tyrant is a medium-large tyrant flycatcher known for its long, narrow tail and upright perching posture. It hunts by sallying from exposed perches along forest edges and open country. Although mostly insectivorous, it may occasionally take small berries, especially outside the peak insect season. It is typically quiet and inconspicuous despite its size, blending well with greyish habitats.
Temperament
alert and territorial
Flight Pattern
short rapid wingbeats with frequent sallying flights from exposed perches
Social Behavior
Usually seen singly or in pairs, maintaining territories along edges and clearings. Pairs are likely monogamous during the breeding season and defend nest sites vigorously. Nests are placed in shrubs or small trees, and both sexes may participate in care.
Migratory Pattern
Resident
Song Description
Vocalizations are modest, consisting of short whistles and thin, sharp notes delivered from high perches. Alarm calls are sharper and more insistent when intruders approach the territory.
Plumage
Overall smooth, plain grey with slightly darker upperparts and paler underparts; the tail is long and narrow with pointed tips giving a 'sheared' look.
Diet
Feeds mainly on flying insects, captured by aerial sallies from prominent perches. It also gleans arthropods from foliage and occasionally from the ground. Small fruits or berries may be taken opportunistically, especially when insect availability is lower.
Preferred Environment
Forages along forest margins, secondary growth, and open pasture with scattered trees or posts that provide vantage points. Frequently hunts from fence lines, canopy gaps, and edges where insect activity is concentrated.
