Evidence reveals that green space and access to nature have positive influences on human health, including social wellness, as demonstrated by the case study of Ottawa’s Fletcher Wildlife Garden (FWG). Members of the volunteer team involved in this urban wildlife habitat project experience social wellness in its nuanced fullness, including social cohesion, social integration and adjustment, social contribution and functioning, social support, social acceptance, and social actualization. In a society and period where increasing numbers of people are living alone and becoming socially isolated in other ways, the potential of outdoor volunteering is particularly significant. FWG volunteers being mostly of retirement age, this project demonstrates the potential for involvement in local green spaces to alleviate social isolation among older people, a population identified as vulnerable to this risk factor.