Seeing Is Feeding for the Frugivorous Bird Brown-Eared Bulbul (Microscelis amaurotis)

Figure 2

The number of birds (log) attracted to each treatment per day for each treatment group; “uncovered,” “half bag,” and “full bag” refer to an uncovered grape cluster, a cluster covered with a bag, half of which is clear and half of which is opaque white, and an opaque white bag, respectively. Error bars indicate 95% confidence intervals (GLMM; error distribution: Poisson).