Bats came to life in Europe in the Eocene period, about 58 to 35 million years ago.
There was a quick transformation from a ground moving mammal to a mammal in flight.
All of these bats were small and weighed a few grams and some of the larger bats may have weighed up to 120 gm.
All of these bats are called Microchiroptera.
The easy way to recognise them is that they have a tail.
The other bats are the Megachiroptera.
The ones we see along the Queensland eastern seaboard have many names such as fruit bat, flying fox.
Seven species of Genus are found in Australia, all through the South Pacific Islands and up to Sri Lanka and India and lower parts of Pakistan.
Here around the Fraser Coast we have three genus: The black flying fox, the grey-headed flying fox and the little red flying fox.
Sometimes we may get the spectacled flying fox.
It is very rare for this bat to come this far south in Queensland and when he does come it is after bad storms when his food chain is very low up north.
Many people complain about the flying foxes as they are not aware of the role and impact they have on the environment.
Flying foxes pollinate the tops of the hard wood forest.
The pollen they eat only comes out after midnight so they will gorge themselves as quickly as they can and move from tree to tree.
As they move they will excrete and their waste drops to the ground and in turn will feed lots of other bugs.
The next time it rains waste and excretion will wash into the ground.
This process acts as fertiliser for the forest for the next year this helps the trees make a good leaf to take in carbon and put out oxygen for us.
Some flying foxes will eat fruit from the trees and may also swallow whole fruits and by doing so acid is being formed within their digestive system and this is the trigger mechanism for the seeds contained in the excretion when being dropped onto the ground to eventually grow into new trees.
Bats are the only mammals to fly.
There are about 1300 species in the world, about 80 are in Australia, with about 17 to 20 species on the Fraser Coast.
For more, find Fraser Coast Micro Bat group on Facebook.