Bama, jinglebob and fh are right. We are stacking hay with a slide stacker. This particular model was fabricated in Valentine NE. It is an all metal stacker, head is powered through a tractor pto and winch system. I too was a newbie to stacking when I met k_ranch, but now I am completely sold on them. The advantages are numerous, 1. humidity is not a problem, you cut the hay with a sickle bar mower and it lays flat until it dries out. Then you straight rake it with a dump rake, bunch it with a sweep, push the bunches to the stacker, load the head and lift it up over and into the cage with the head. We used a weber built wooden slide stacker until a few years ago. 2. The hay keeps in a stack beautifully for years, we just got done feeding stacks several years old that were green and like new inside, bales just don't last quite that long, in our experience. 3. We can feed hundreds of cattle in short order (seven ton stack in 20 minutes stringing the hay out as far as you need it to be, and the hay is then in small bunches the calves can really nestle into for protection). Some places don't stack because they have to move the hay long distances, wind can be a factor moving stacks that have not settled and crusted over (on a truck). plus the size is inconvenient for some people trucking/handling.
Bales have their advantages too, one is that we really need a larger crew to stack well, another would be very hilly ground, and another is for someone that has many separate/far areas to hay. The stacker arms will fold down to go under power lines, but it is a hassle. I am going to post several pics from last summer stacking.... I chose this one because you can see our son brush up in the platform helping gramps. and the hay is flying all around.