Mark, I hope you have a great trip. The upland birds are perdiz which come in a couple of different sizes; about'quail' and 'small pheasant' sizes. You will probably hunt them in fairly open country (like cow pastures)over good bird dogs. They usually run in singles, and are peculiar because they have no tail feathers, being more closely related to ostriches than what we think of as partridges. Without tail feathers, they have a heck of a time making turns in the air and fly in staight lines, sometimes into trees or fence posts. Enjoy...Geo