Great-billed Heron

Ardea sumatrana

Daintree River, FN Qld IMG_2088 20190815 - breeding plumage: silvery plumes on lower throat. Bellowing. CLICK for close-up.

Notes: Largest Australian heron. Stout black bill, yellow iris, plain grey-brown plumage.
Broad wings, long leg projection in ponderous flight. Breeding: silvery plumes on nape,
mantle & lower throat. Juvenile: browner, mottled on neck, upperparts. Voice: when breeding,
bellows, sometimes twice in succession. In tall mangroves lining tropical coastlines, estuaries.

Range from Morcombe©