3 Important Steps When Building an Outdoor Bird Aviary

A bird aviary is an excellent addition to any garden setting. Not only does it provide the best environment to house your birds, but it also gives them access to sunlight for the benefit of their organ, skin and feather health.

However, a certain amount of planning is necessary when building an aviary. To help you avoid problems in the future, we have listed down the three most important steps you don’t want to miss when building an outdoor bird aviary.

From determining the best size for your aviary to positioning your birdhouse in the best spot, we’ve got you covered!

3 Important Steps When Building an Outdoor Bird Aviary

1. Determine the Size


First, you need to look at the amount of space you have available and determine how big you want your outdoor aviary to be. To get the most out of your birds’ sanctuary, you must try to provide your birds with as much as space you can afford.

Having a large aviary means you are giving your birds the freedom to fly around and enjoy themselves, whilst being as closely associated with their natural habitat as possible.

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The overall size of the aviary also depends on the birds’ species. For instance, if you plan to get large parrots, they require a much larger flight case compared to finches and budgies which can live in a normal-sized birdcage. 

Here’s the minimum size chart of an aviary or birdcage, courtesy of Here Bird.

Small birds: Width: 20″, Depth: 24″, Height: 24″

Medium birds: Width: 25″, Depth: 32″, Height: 35″

Large birds: Width: 35″, Depth: 40″, Height: 50″

Extra-large birds: Width: 40″, Depth: 50″, Height: 60″

2. Site


When it comes to positioning your aviary, it’s best to locate it within view of your house — allowing you to watch the birds from the comfort of your home or from your garden while working or relaxing.

We do not recommend building your bird aviary under a tree however as this will limit sunlight, which can result in a dark, damp birdhouse. Trees also provide easy access for predators like rats and cats; they can get to the upper part of the cage and attack the birds.

Our experts also suggest not to position the aviary near noisy mechanical devices (e.g. air vents and air conditioning units) to prevent the birds from discomfort. Be sure to consider what’s the best site to place or build your bird sanctuary.

3. Aspect


Keep in mind that birds are sensitive to wind, chill, and both cold and heat stress. When planning the location of your outdoor aviary, it’s crucial to take prevailing winds and sunlight intensity into consideration.

You have to provide the birds with a protected area away from the sun, rain and wind. To ensure that the cage is safe enough, at least one third to half of the cage should have a roof covering enclosing one or two sides — depending on the current wind direction.

Moreover, if you happen to live in an area where temperatures can soar, make sure your aviary isn’t placed in an area that gets excessively hot. 

The best position is where your birds get the morning sun, facing south.

Additional Considerations When Building an Outdoor Bird Aviary

  • To prevent predators, add a layer of mesh to the outside of the aviary frame for extra protection.
  • Temperature control in both hot and cold climates are often overlooked in aviary construction, according to Avian Medicine. With that, it’s crucial to provide your birds with additional protection in case of local weather extremes such as snow, wind, and extreme heat.
  • Consider the overall strength and endurance of your birdhouse’s construction materials to withstand these kinds of weather extremes.

Safe, strong, natural features are essential for an aviary. We hope these three important steps will help you to build the perfect outdoor aviary for your birds to enjoy.

Looking for ways how to keep your birds from predators such as cats? You can read our article here: 5 Ways to Keep Birds Safe from Cats.

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