Or perhaps you want to spend some time in the Australian Outback, or travel throughout the deserts of North America. Located deep in the Grand Canyon, there are 4 sets of falls: Mooney Falls, Havasu Falls, Navajo Falls and Beaver Falls. They are amongst the tiniest avians, most species determine about 3 to 5 inches in length and normally weigh in between one to two tenth of an ounce.