~~There are a lot of problems with this design as well put together as it is. I'm not trying to bash it, but I do want people to realize the downfalls before spending that much money. I have 1,200 hens that I pasture raise in mobile coops. Every one is different as I experiment with what design works best for me. Below is a new invention I came up with to solve most of the problems I was experiencing with my coops that had skids or tires.
Downfalls with this design:
1) It cost $32,000!!!!
2) It only has one axle which puts most of the weight of the coop on two small tires. It will get stuck in soft or soggy ground.
3) The nesting boxes are above the roosts. Chickens want to sleep as high off the ground as possible. They did invent a cage that will push the hens out before sunset, but it is a fragile technology to depend on working 365 days a year.
4) The floor is made out of expanded steel which allows most of the manure to fall through. The only draw back is that you have to move the coop at least every third day to prevent piles of manure and a lot of air pollution for the hens. That means driving the truck or tractor out in the pasture more frequently which can compact the soil and get stuck more often in the winter.
5) They claim that the larger caravan can accommodate 450 hens. That seems like a 150 more than should fit with the dimensions given. If they force some hens to sleep on the floor the coop could probably fit that many. The problem with stacking chickens is that the ones on the bottom get crapped on and they could get their leg eaten off from a predator pulling it down through the holes in the floor.
My invention "The Egg Train" was created out of necessity. We needed to expand to another property and we could not transport our custom truck with Mattracks on it back and forth to each property. I needed something different that could be moved by hand. I work in a family business building chain link fencing so I was able to use 1/58" O.D. galvanized pipe for a lot of the construction including the tracks the coops roll on. The track leap frogs in front of the coops as they are pushed through the pasture. Each coop weighs less then a thousand pounds and can accommodate 300 hens. The coops can be moved day or night 365 days a year. No need to worry about getting stuck in the mud with its light footprint and weight distribution over the length of the track. The side walls all hinge up and down on gas springs to allow for maximum airflow. The solar panel keeps the battery charged to power the poultry netting. Under the length of each coop I installed a water nipple system. This keeps the water shaded and clean. I used a polymax poultry/kennel flooring material with 7/8" square holes. It won't rot or rust and it is easy on their feet with no sharp edges anywhere.