How much does a full grown swan weigh?

Mute, Trumpeter and Whooper Swans can weigh more than 15 kg (33 pounds), while the other Northern swans, Whistling and Bewick's, weigh 3.4-9.6 kg (7.5-21 lb).

Of the Southern Hemisphere swans, Black Swans are larger, weighing 3.7-9 kg (8.1-20 lbs), while male Black-necked swans weigh 4.5-6.7 kg (10-14.8 lbs) and females weigh 3.5-4.4 kg (7.7-9.7 lbs).