Its an attractive bird but just so different and when we see an adult dark morph VOC nearby giving some alarm signals we think this bird is maybe a juvenile but the turns out that the dark morph VOC is just protecting a nest nearby in which a new born chick has just tumbled out of the nest. A second egg is cracked and ready to produce a second chick.
We back away leaving with a few shots of the 'white' VOC and carry on with checking traps and bait stations.