Figure 2.

(a) The percentage of large-billed gerygone and little bronze-cuckoo chicks that were ejected according to whether down-feathers were trimmed. (b) The percentage of untrimmed and trimmed chicks that were ejected among host and cuckoo nestlings according to whether the nest was naturally or artificially parasitized (i.e. whether an adult cuckoo visited the nest during the egg-laying period). Sample sizes are given in parentheses at the base of the bar, and numbers above bars depict the exact percentage.