by Bluesbird Exotics on Mon May 12, 2008 2:09 pm
A huge portion of a bird's head is sinuses, much more than a human's, so my guess is that a bird with a sinus infection could have a doozy of a headache. Birds handle pain very differently than humans, as a result of being prey animals. If they groaned and sighed and carried on as we often do, they would be calling predators to dinner. Sometimes they seem to go into a trance, much like a cat in labor, to deal with their pain.