Buff-throated Saltator (Saltator maximus) Science Article 1
The relationship between army ants and birds in Neotropical forests has been studied carefully by Willis and others (see Willis and Oniki 1978, and included references). The birds that attend the ant swarms forage upon the invertebrates and small vertebrates that flee the ants (Willis and Oniki 1978) and several bird species obtain virtually all of their food from this source.
DOUGLAS F. STOTZ, Wilson Bull., 104(2), 1992, pp. 373-374