Answer
c. sexual selection
Work Step by Step
Bowerbirds are a family of passerine (perching) birds from Australia and New Guinea that are renowned for their unique and elaborately colored decorative constructions (or bowers) which are constructed by the males of the species and are used not as nests but as courtship arenas to attract females. The bowerbird family contains 20 different species in five genera (17 species of which construct bowers and the remaining 3 of which do not), and they are found in a range of different habitats such as rainforests and acacia forests.
As has rightly been suggested, bowerbirds became “emblematic of sexual selection ever since [Charles] Darwin’s illustrative use of their mating arenas in Descent of Man and Selection in Relation to Sex”
