Figure 5.
(a–e) The photos of nests (left column) and the nest materials (right
column). The species and sampled place are shown on the left bars. In
addition to grasses, bird feathers were found inside the nests (pink
circles) in both blue-capped and red-cheeked cordon-bleus (b–e). Fine
grasses and feathers were also found in a weaver nest (b, see also Movie
S1). Flowers and stems of Mollugo nudicaulis (blue circles) were
found on the outside of the nests only in blue-capped cordon-bleu own
built nests (a, c; see also Fig. 2a).