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Pollen loads on nectar-feeding marsupials (Tarsipes) and honeyeater birds were monitored for a year at a site on the south coast of Western Australia. Birds carried more pollen grains than the mammals. Both groups carried the same pollens of the main nectar-producing plants in the area and their pollen loads followed the patterns of flowering. Those Banksia species whose pollen was carried most by vertebrates set most seed.
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Wooller et al. (1983) studied this question.
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