Guardian: Stay with me on this one.
The joke started something like this: a cockatoo, a potoroo, a skink and a brown tree frog go into a bar...
Unfortunately, this isn't' a very funny joke, because the Glossy Black Cockatoo, the Long-nosed Potoroo, the Eastern She-oak Skink and the Large Brown Tree Frog are all threatened species.
The Glossy Black is a fussy eater, a bit like a vegan hipster. It only feeds on the seeds in cones of she-oaks, and even then, only from selected individual trees. Like...