Behavior

Vermilion Tanager is typically seen in pairs or in groups up to five, and as many as eight individuals. They hop along mossy and epiphyte-laden horizontal branches, which they inspect for insects "by hopping along mossy branches ... from inside the tree crown out to open foliage at the ends of branches", scanning the branches and also peering from side to side, investigating bark, moss, and leaves (Isler and Isler 1987).

There are no data on territorial defense, maintenance, or fidelity, or for territory or home range size, for Vermilion Tanager.

Little has been reported on the sexual behavior of the Vermilion Tanager; this species presumably is at least socially monogamous.

Vermilion Tanagers generally travel in pairs or small (family?) groups (Parker and Parker 1982, Ridgely and Tudor 2009, Schulenberg et al. 2010). This species almost always associates with mixed species flocks, especially accompanying Tangara tanagers (Ridgely and Greenfield 2001, Restall et al. 2007, Ridgely and Tudor 2009, Harvey et al. 2011, Hilty 2011). Additional species known to accompany Calochaetes in mixed-foraging flocks include Rufous-browed Tyrannulet (Phylloscartes superciliaris), Barred Becard (Pachyramphus versicolor), and White-winged Tanager (Piranga leucoptera), among other species (Salaman et al. 2002, Guayasamin and Bonaccorso 2011).

No reported instances of predation on Vermilion Tanager?