In general, birds do not use nests for purposes other than breeding and raising their young. However, there are a couple of exceptions worth mentioning.

During courtship, male wrens may construct multiple proto-nests within their territory as a way to attract potential mates. These nests serve as a form of advertisement, allowing the female to inspect and choose the nest she finds most suitable. In this unique case, the nest can be seen as a tool for courtship rather than a traditional nesting site.

Additionally, certain cavity-nesting bird species, such as those that utilize nest boxes, may seek out similar cavities for roosting during cold weather. This behavior often occurs in groups, as it allows them to share body heat and stay warm. However, it’s important to note that this roosting behavior is distinct from nesting behavior and serves the purpose of thermal regulation rather than reproduction.