In late Spring and early Summer ( Like about now) in my State of Queensland Eastern Australia, the RSPCA and the various Wild Life people often receive calls from people who report seeing birds flying at night around street lights. What they are seeing is the Giant Wood Moth that has hatched from its pupae in eucalypt trees. Of course they could also be seeing birds of the night such as the Tawny Frogmouth taking up the offer of a nice moth.
However, mainly people are reporting the moth. The Giant Wood Moth is the Worlds largest moth weighing in at 30 grams and with a wing span of 25 cms .(10 inches). The aborigines used to travel down the water courses searching for these delicacies and cooked them up as Witchety grubs ( I hear they taste like fried eggs...I will take their word for it) but they had to compete with the Black Cockatoos who used their strong bills to rip open the bark and uncover them