on 9. The effect of ant-following birds on the foraging success of the army ant Eciton burchellii. Among the army ants are some species that only venture out at night, but no adequate studies of their activities have been made. March 2005 ANTBIRDS PARASITIZE ARMY ANTS 557 20f 10 0r z-10 Control Exclusion Paired trial difference FIG. 1. Instead antbirds prey on the insects disturbed by the ants. Antbirds are not easy to study. (a) Mutualistic (b) Parasitic (c) Commensal. Antbirds on a Panamanian island seem to be evolving from amateur, part-time parasites, skimming off the spoils of marauding army ants, to following the swarms for their every meal. They do not feed extensively on the army ants themselves. But Ocellated Antbird only feeds on army ants and that is why they are called specialists. You see, army ants have a formic acid jelly center that does not taste very good. March 2016. Answer to: What type of symbiotic relationship is found between antbirds and army ants? The army-ant-following birds have learned to take advantage of the swarm by perching above it and preying on insects and other small animals trying to escape. Army Ants and Antbirds. They grab insects and other small creatures that scuttle, jump or fly up in an effort to try to avoid the approaching army ants. The army ants most followed are "swarm raiders," species that form wide pha-lanxes that trap or flush roaches, spiders, and other active prey as well as larvae of ... but most antbirds rarely follow ants. Table 1 lists the 50 species that follow ants regularly; most are professionals. Shown are the standardized numbers of ant aggregations observed in each area of 18 paired trials (open boxes) and the difference be- Most species of antbirds look for ants when they want to, as they also forage for food by hunting directly, and they hunt within the swarm of ants only when they find them by accident. 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