Why might insects or animals help pollinate Pandanus flowers?

While the genus Pandanus is primarily thought to be wind-pollinated, insects or animals likely assist in the process to some degree for certain species.1

This interaction is suggested by the presence of white to pink spathes that enclose the inflorescences, as well as the emission of odors from the flowers of some species, such as P. odoratissimus. These traits are common indicators of plants that utilize biotic agents for pollination. In the related genus Freycinetia, pollination by birds and bats has been explicitly documented in regions like Indonesia, Samoa, Hawaii, and New Zealand. In these instances, the animals are attracted to the flowers by edible bracts and pollen that is contained within a waxy matrix of edible oils.12