Home is where the hollow is
A citizen science project is helping scientists understand how birds and animals use tree hollows, and will guide councils and others in preserving and selecting suitable species. Parrots, possums and bees are among many animals that need a hollow to call home. As older trees are lost to urban encroachment and land clearing, competition among former residents for remaining hollows heats up.
Wildlife ecologist Dr John Martin from the Royal Botanic Garden Sydney, who leads the project, says not all hollows are the same.
Some are pipe-shaped, while others go deep inside a tree, and entrances vary from a few centimetres to gaping holes. Even orientation can dictate nocturnal or daytime use.
Register at hollowsashomes.com, then report activity in your neighbourhood trees, or even in a nestbox, to show how your wildlife is faring. You can also make a roster with friends or family to jointly observe local trees.