The Perfect Chicken Coop

I have built, then rebuilt, many coops over the years. Some things worked, some did not. I am trying to define, design, then build, the ultimate coop. Comments and advice are welcome and will be incorporated here if possible. Send an email to 4chicky@mail.com with your comments and suggestions.

Design Considerations / Requirements

Movable so cleaning is easier
Only used for 3 seasons (could use over winter in right conditions, but not designing for that)
Best value per bird kept, but no cheap materials that need replacing
As attractive and durable as possible
Functional for breeding or growouts
Enclosed area on west side (where prevailing winds are usually from) extends to ground on 3 sides
Window on enclosed side that can be opened to see the other end. When pulling backwards, this allows you to see before you run over a bird.
Door on lower part of enclosed end to allow easy servicing of food and water for ducks/geese

Mandatory

Movable by one person
Not affected by strong winds
Multi-species – Chickens and ducks, for example
Roosts adequate for the species kept
Wall attached feeders protected from precipitation
Must move backwards as easily as forwards, plan how to move sideways as well.

Not

No wheels, will drag this with a hard truck from Harbor Freight
No handles for pulling either, too complicated as we need to pull it backwards also
No tarps – they tear and look cheap

Under consideration

Removable nest boxes
Built-in waterer – so the water does not need to be removed before moving the coop. This can add weight, so maybe not
Roof over entire pen, or just sleeping/nesting area?
How to watch that we don’t injure birds when pulling it backwards
How to pitch the roof so rain goes where we want it
Can it be divided into separate breeding pens for smaller groups?