budgerigars

tags: yawning, thermoregulation, budgerigars, Melopsittacus undulatus, animal behavior Yawning human, Homo sapiens serving as a perch for a domestic budgerigar, Melopsittacus undulatus. Image: Wendy (Creative Commons License). Yawning. Everybody does it. In fact, I am yawning now as I write this piece. Yawning is interpreted to have a variety of meanings, ranging from tiredness to boredom. Perhaps more interesting is the fact that yawning is contagious among humans, at least: watching someone else yawn, seeing a photograph or reading about -- and even the mere thought of -- yawning is…