Beryl-spangled Tanagers are described as active foragers, moving rapidly among the tips of smaller branches (Hilty, cited in Isler and Isler 1987, Fjeldså and Krabbe 1990). Hops rapidly, almost running along thin branches, then remains perched for 3-5 seconds before moving on (Hilty cited in Isler & Isler 1987). They tend to perch on thinner branches than other Tangara (Naoki 2003, Schulenberg et al. 2007). The main foraging stratum is the canopy (Parker et al. 1996).
Social and interspecific behavior
The Beryl-spangled Tanager rarely is seen alone; occurs in pairs or in lively groups of 3-25 (Isler and Isler 1987, Hilty 2003). Beryl-spangled Tanagers often flock with other tanagers, including Golden-crowned (Iridosornis rufivertex), Saffron-crowned (Tangara xanthocephala), Flame-faced (Tangara parzudakii), Metallic-green (Tangara labradorides), and Golden-naped (Tangara ruficervix) tanagers (Hilty and Brown 1986).
Strewe (2001) observed Beryl-spangled Tanagers to attack nearby Orange-breasted Fruiteaters (Pipreola jucunda) that were building a nest.