The aviary should be planned with the overall security of the birds being the No. 1 priority. Birds must feel safe in order for their best breeding potential to be realized. The aviary must be safeguarded against intrusions from critters disturbing the nests. Mice, rats, snakes, opossums, raccoons and hawks can destroy a breeding season, not to mention the potential danger to the breeders themselves. When designing the aviary, depending on the species, you may need to allow for partitions between pairs to ensure privacy.
Partitions can be useful tools in breeding.
With some species you may need to remove the partitions for part of the year to stimulate a bit of aggression between pairs, which can be conducive to fertility once breeding season commences and the partitions are back in place. Partitions can prove to be the deciding factor when you have a pair that is easily intimidated by the presence of another bird of their own kind. Once again we are addressing the need for security. Many factors come into play when deciding how to create your aviary, depending on which part of the country you live in. If you build indoor aviaries, you must consider that diseases spread more easily inside than outside.