I use 'The Slater Field Guide to Australian Birds' Slater, Slater & Slater,
And 'The Birds of Australia' Simpson & Day.
I use both as often diagrams have slight variations in colour. ie cross reference.
Mangrove -Black cap, yellow legs and eye and lower beak. Also pattern on wings.
Not enought black to be a Black Bitten. Juv Black has similar pattern on wing but lacks the yellow colouring.
