Without any doubt this is true!! it is not common knowledge though. The bird is in fact called Sorebum bird and is currently under threat of extinction, as it migrates to Southern Africa during our winter it unfortunately is a delicacy of the Umigooli tribe.
The Umigooli are a tribe of midgets only averaging 3ft 6" in height and the sorebum bird live in a very long spikey grassed areas. The Umigooli tribe are so called apparently as they have been heard whilst chasing the Sorebum bird and leaping up from these spikey grasses, Shouting Umigoolies!!
Ratter surely that tribe are called the wherethehekarwi tribe, as they are so short and the grass is so tall they jump up and down shouting wherethehekarwi, (the old ones are the best ,
Acorn Woodpeckers gather acorns and create a granary by drilling holes in a dead tree and stuffing acorns into them. These are sometimes called sap holes, so maybe your friend mis-heard, its.......... SAP hole.
Well I've heard the adult version of that joke, dot !!
The fukari tribe in the Amazon jungle are only 3' tall, so in the very long pampas grass they have to leap up and down to see their way through. This in turn excites them, and so as to scare their enemies, they shout we're the fukari, we're the fukari making others think they must be lost!!