Lyrebirds are the ultimate high achievers: the world’s best songsters, the world’s oldest songbird line (along with scrub-birds), beloved cultural icons that grace our coins, and spectacular ecosystem engineers. They may be something else as well – birds that save human lives.
The ‘ecosystem engineer’ tag refers to the changes they make when they scratch the ground to unearth insects. One lyrebird in a year can shift 200 tonnes of soil and litter per hectare, causing soil erosion and uprooting ground-hugging plants, including, in Tasmania, an endangered orchid.
A new paper by Daniel T. Nugent and two colleagues takes the engineering concept further by concluding that lyrebirds reduce bushfire risk by burying leaf litter and uprooting the grasses and bracken that carry fire.