I saw these birds along Terry’s Creek on the 14th March. The pair of Boobooks were in the bamboo section of the creek and being bombarded by Noisy Miners and Satin Bowerbirds. One of the Satin Bowerbirds appears to be partially leucistic with a dark head and dark bill but otherwise green. A normal transition to black [for a male] occurs between 5-7 years but the beak goes light first and the black colouring comes in all patchy rather than evenly.
From Jenny
From Jenny