I have a question about where to put my birds waterer. They have a normal waterer, always clean and full. When I'm out in the yard sunbathing or working in the garden, I let them out of their run so they can forage in the garden. I leave the run door wide open for them to come and go as they please. If it's hot they begin to pant and may lie in the shade, but I never see them head back to the run for a drink! Only when I herd them back home to do they take big longs sips at the waterer. Do they know it's in there if they get thirsty? Should I be moving the waterer our into the yard for them?