Behavior

The behavior of Yellow-green Tyrannulet is not well known. It forages in the canopy, and is very active. The posture is hortizontal, and tail often is carried cocked above the horizontal (Ridgely and Gwynne 1989, Fitzpatrick 2004). It also often holds the wings slightly out from the body or rapidly flicks one wing open above the back (Ridgely and Gwynne 1989, Fitzpatrick 2004). Yellow-green Tyrannulet moves rapidly through foliage; insect prey is captured with short sallies or hovers to leaves (Fitzpatrick 2004).

There are no published data on territoriality, or on territory or home range size, for Yellow-green Tyrannulet.

Little information. Yellow-green Tyrannulet often is seen in pairs, and so presumbably it is at least socially monogamous.

Yellow-green Tyrannulet usually is solitary or in pairs, which frequently associated with mixed species flocks (Wetmore 1972, Ridgely and Gwynne 1989).

No reports of predation on Yellow-green Tyrannulet?