From "Western Ground Parrot nest search at Waychinicup September and October 2001".
The map below (Fig. 4) shows the roosting sites of three pairs of Western Ground Parrots at the time of the surveys (September and October 2001). The roosting areas were 1.2 - 2 ha.in size and approximately 250 - 300 metres apart. Each roosting site was an 'island' slightly above the general level of the swamp and with a wider range of plants than the sedges of the swamp floor. The dense sedges of the swamp floor are about 0.75 metre above ground, and the dense vegetation of the roost sites stands to about 1.5 metres above the ground.
A fourth and similar island, near the lake, was not being used as a roost site.