The Australasian grebe (Tachybaptus novaehollandiae) is a small waterbird common on fresh water lakes and rivers in greater Australia, New Zealand and on nearby Pacific islands. At 25–27 cm in length, it is one of the smallest members of the grebe family, along with the least grebe and little grebe.
Both sexes are dark brown above with a glossy-black head and neck and a striking chestnut facial stripe, extending from behind the eye to the base of the neck. The eye is yellow, with a prominent pale yellow face spot below.
In winter they are generally duller, with no chestnut stripe, the face spot whiter, and throat and front grey-white. Similar to non-breeding hoary-headed grebes, which share a similar range.