In general, males of a species expend a lot of energy attracting females. There are many instances where males utilize much of their nutrient intake to produce antlers, tusks, horns, etc. to either attract females or compete with other males for potential mates. Are their any instances in animals in which the females do this to attract males or to compete with other females? If so, what features have the females evolved to win over potential mates and fight off competitors and what advantage is there for the species?
I'm aware of a few animals, such as the seahorse and jacana where the males invest more energy in the offspring, but I'm not sure that the females of these species expend some of the energy saved in the offpring and put it into attracting males or competition with other females.