Researchers from Edith Cowan University found that busy roads can be a barrier for some birds, particularly insectivores.
Native birds to Kings Park in Western Perth were observed over four months to study how many birds were able to cross a busy thoroughfare to reach nearby urban gardens.
The researchers found 61% refused to cross the six lane road. Some species preferred the native vegetation in Kings Park, while others ventured to the exotic plants of urban gardens.
The transition between urban areas and native bushland could be softened to help minimise habitat fragmentation and improve connectivity for native birds.
Read more at Edith Cowan University