Why the elusive echidna is a mystery to scientists
www.abc.net.au
The lack of knowledge about the species has experts worried echidnas could decline without anyone noticing.

In short:

An echidna expert from the University of Queensland says not much is known about how many echidnas there are in the wild.

It has led to concerns there is no way to track the impacts of urbanisation, climate change and cars.

What’s next?

Members of the public are being urged to report any echidna sightings to the EchidnaWatch program.