An authority in northern Victoria is using the sounds of the bush to determine whether environmental watering is working.
The Goulburn Broken Catchment Management Authority hides recorders in the bush to monitor sites where water has been released to promote plant and animal health.
Environmental Water Officer, Jo Wood places the recorders at key locations where environmental water has been released in previous years.
She then gathers the recordings and listens to them to try and identify what animals are using the environment.
"We have a music software that we use so I can look at the sounds as well."
"After a while you get to identify (which animal) the sounds look like."
Audio monitoring is a great way of learning what is in an environment without much human interference scaring anything off.
The tricky part if when the weather changes, because frog calls can change with it.
"We have had frog calls change because of cold weather."
"I thought I'd found a new species and got really excited and sent the recording off to a specialist only to find it was a common froglet."
"I'd already named it and everything."
Most of this project has been focussed on bird and frog calls.
The authority is hoping farmers and other landholders can keep and ear out for sounds particularly around dams and wetlands on private property.
To help them the GBCMA has developed an iSpy Frog App that you can download to get more information on what different frogs look and sound like.