Wildlife in Homes: Study Urges Nature-Inclusive Urban Design
According to a study published in the journal People and Nature, a collaboration between the University of Melbourne and the wildlife rescue service Wildlife Victoria, native Australian animals are increasingly utilizing residential buildings as substitute habitats due to widespread urban expansion and the loss of natural tree hollows.
Ten Years of Wildlife Rescue Data Reveals Urban Adaptation
The research draws on 76,663 Wildlife Victoria records collected over a decade. Researchers identified 2,399 verified records of 36 native species using 28 different parts of residential buildings across Australia. According to the findings, buildings are actively filling the ecological void left by vanishing natural shelters. The data shows that mammals primarily use houses for sleeping, while birds exhibit the highest species diversity and use structures for nesting.
Lead researcher Bethany Kiss, an architect and PhD candidate at the University of Melbourne, explained the mechanics of this urban shift. Tree-dwelling animals search for elevated cavities that mimic tree hollows, whereas ground-dwelling species seek out subterranean spaces beneath houses that resemble burrows or rocky refuges. According to Kiss, wildlife is simply adapting to environments where natural places have disappeared.
From Roofs to Balconies: Where Native Animals Live
Animals occupy nearly every part of residential structures. Possums frequently take up residence in roofs, wombats shelter underneath floorboards, microbats squeeze into wall cavities, and ducks occasionally nest on balconies. Mammals comprised the majority of house-using species in the study.
The architectural characteristics of modern housing stock influence how animals interact with domestic spaces. According to the research, new homes typically feature fewer gaps, nooks, and crannies than older constructions. This design evolution makes modern buildings less accessible as wildlife habitats, underscoring the importance of deliberate urban planning.
Conservation Value and Intentional Design Strategies
Urban centers and suburban neighborhoods function as critical conservation zones rather than mere concrete landscapes. According to study co-author Professor Sarah Bekessy, an urban ecologist and Lead Councillor at the Biodiversity Council from the University of Melbourne, cities play a vital role in protecting biodiversity. Bekessy noted that everyday interactions with local wildlife improve human mental wellbeing, strengthen connections with nature, and foster healthier, more resilient urban areas as cities continue to expand.
Architectural modifications can facilitate peaceful coexistence between humans and native animals. Bethany Kiss pointed out that intentional design features—such as integrated swallow shelves or purpose-built possum boxes—can accommodate wildlife while minimizing household disruptions, such as being woken by possums fighting in the ceiling during early morning hours.
International precedents demonstrate the feasibility of wildlife-friendly building mandates. In the United Kingdom, swift nesting bricks are officially mandated in new construction projects.
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