Citizen science reveals bats thriving in urban Australia

Researchers in Western Australia have found that citizen science can play a key role in studying bats, helping to identify species and address gaps in knowledge about their behavior and habitats. The team distributed bat detectors to volunteers, devices that convert the high-pitched echolocation calls of microbats into audible recordings for humans. These recordings allow scientists to distinguish between species based on variations in frequency and call patterns.

Bats are among the most diverse mammals globally, with over 80 species found in Australia alone. While smaller insect-eating bats dominate the landscape, larger flying foxes primarily consume fruit, nectar, and pollen. Despite their ecological importance—such as pollination and pest control—bats often go unnoticed due to their nocturnal habits and negative public perceptions.

A review of 51 international bat citizen science studies highlighted that acoustic surveys, using detectors to record bat calls, are the most effective method for public participation. Inspired by these findings, the researchers launched their own project in 2025, recruiting volunteers from Perth’s City of Wanneroo. Participants were trained to use smartphone-connected detectors and conducted surveys in local bushland, recording five bat species across 23 surveys.

The most frequently detected species was Gould’s wattled bat, known for its adaptability to urban environments. The study also documented the first recorded sighting of Holt’s long-eared bat within the city limits, though chocolate wattled bats were not found in urban areas. These results offer new insights into which species are thriving in human-altered landscapes and why some may be more resilient than others.

Beyond scientific contributions, the project revealed benefits for participants. Questionnaires showed that volunteers gained greater knowledge of bats, felt more connected to nature, and developed more positive attitudes toward them. Many expressed surprise and enjoyment at hearing bats’ calls through the detectors, overcoming previous fears or lack of exposure to nocturnal wildlife.

The findings suggest citizen science can bridge gaps in bat research while fostering public appreciation for these often-overlooked mammals. Experts encourage others to explore bat detection through local groups, community events, or resources from organizations like the Australasian Bat Society, offering accessible ways to engage with Australia’s diverse bat species.