Fruit and Spice Park to stay an active garden club member and develop insights on the different fruits that should be planted until she passed away in 1979. In memory of her and Preston B. Bird, South Date County renamed the Redland Fruit and Spice Park to the Preston B. Bird & Mary Heinlein Fruit and Spice Park in 1980. The park contains more than 500 varieties of fruits, nuts, and spice trees. It also includes more than 80 banana trees, 160 varieties of mango trees, more than 40 varieties of grape trees, and 70 varieties of bamboo trees. It also features guava, jackfruit,
Palm cockatoo and creation of nest hollows. Fires allow the colonisation of microorganisms and termites, which enter the tree and start hollowing out the inside. Cyclones are important in the final stage of nest hollow development. The palm cockatoo often feeds during the early hours of the day on a diet that consists mostly of wild growing pandanus palm fruit and nuts from the kanari tree, "Canarium australasicum". They have also been seen eating fruit from Darwin stringy bark "Eucalyptus tetradonta" and nonda tree, as well as seeds from the cocky apple tree, beach almond, and black bean tree. The palm cockatoo