Identificaciones de anthonykat

Pic of one adult visiting its nest in large Eucalypt. Young are very pale, almost grey/white in colour (seen jumping from branch to branch at around 8pm by torchlight).
Unsure how many fledglings are in the nest; possibly only one.

Recording is very quiet, so may need to turn up volume. Serious of repeated croaky calls. Only briefly managed to see bird through some foliage but seemed to partially black (on head/back) and white, and I thought with a crest. Maybe 20-25cm size but hard to judge through foliage.