極危物種聖誕島飛狐會食用外來植物，但研究發現這些植物營養價值較低，無法為牠們提供均衡營養。研究員擔心這會進一步對飛狐的存活造成威脅，而且牠們是島上重要的傳播花粉及種子的媒介，數量減少會直接影響到當地的生態系統。

A recent research found that exotic plants that critically endangered Christmas Island flying foxes feed on have less nutritional value and do not provide them a balanced meal. researchers worry this would further threaten the survival of flying foxes and the local ecosystem, as they are important pollinators and seed dispersers on the island.