Guinea Fowl - Google it for images
The way I heard it was two drunks in a bar in Nogales ordered a couple of Long Necks...
Pat & Eyeful Tour were correct: a very close up shot of the grill and a tiny sliver of the logo on a Martin Audio Stage Monitor.
Actually, I would like to revise my earlier guess: I now think it is a flat spot on a badly worn tire.
Jezsik and Wildbegonia,
I appreciate your kind comments; actually the only post processing was attempting to recover lost detail. Since I had lost the negative, I only had a print I had made for a book publisher as a potential book cover for a poetry text. They had specified much higher contrast attempting a much more graphic image in order to minimize production costs - no screens needed. I have been slowly digging through more than fifty years of negatives and slides covering as many years of travel on several continents and spanning many events that have shaped the world we live in today. This was only one.
Crepe Myrtle branch
Flexible metal ducting
Tree/trees as seen through water drops
Wear spot on sole of shoe
We've lseen this one before - definately closeup of LCD display or TV
Itty bitty LEDs
Photographer's reflection in Christmas tree ornament
Rain on deck - an excellant picture, too
Shutter speed too long to be anything in movement. Thus, I agree with the carbonated water ice ID.
I algree, window shades