Since your duck coop will be outdoors all year round, and will be subjected to a variety of weather types, it's important that the construction is secure and draft-free. Small farm owner says weather is not the only issue to consider when looking at the construction of a duck coop, but pests and predators can be a problem too. Look for a coop that is sturdy enough to withstand strong winds or snow loads, while also having plenty of security for the ducks inside. Heavy duty wire, weather-treated lumber, and a full covered bottom can keep your ducks safe.
There are a variety of choices in materials you can have for your duck coop. A pet-duck owners says it's better to go with wood framing since it can be weather treated and is able to withstand all temperatures. Metal framing is durable, but is not very insulative or practical in extreme temperatures. Cedar is a popular wood species to use for the framing, but oak, pine, and some manufactured wood can be used as well. The windows should be made from a durable and strong medium gauge wire mesh to provide plenty of ventilation while also keeping your ducks safely contained.
The size of your duck coop will depend on a variety of things. If this is a temporary or night-only coop, it does not need to be large and 2 square feet per duck is plenty. If your ducks will be spending all of their time within the coop, they will need room to not only walk around normally but stretch their wings as well, and 4 square feet per duck at a minimum is recommended. Urban farm enthusiasts suggests going with the largest coop you can fit into your backyard and your budget.
Your duck coop can be constructed with additional features that are not necessary for a safe and secure coop, but can make it easier for you to tend to your ducks. Look for coops that have large access doors so you can easily reach into the coop and get your ducks out when needed. Other useful features may include an access door near the nests for easy egg collection, a feeder you can fill from the outside, attached waterers that can be accessed from the outside, and a roof that can provide shade as well as protection from rain and snow.