Yes, swans do exist. A few examples would be the Mute Swan and the Black Swan
yes
i know trumpeter swans do. I believe all swans make a sound. Swans are extremely territorial & will quack loudly as the head towards the intruder. They attack anything, even humans.
fox,humans,dogs threaten swans
No
Enemies of swans include wolves and raccoons. Humans are also a threat to swans because they are harming their habitats.
because trumpeter swans' call sounds like a trumpet
humans can do anything in space. But you can not take anthing like psp's and stuff like that or phones.
if the swans put there heads together it looks like a hart.! there is black swans belive it or not. Hope these facts help :)
Swans, like most birds, are largely diurnal. However, at times they will adapt their routine to whatever is safest so they can go about feeding without disturbance. If they get a lot of harassment from humans they will gradually learn that humans are not around at night and so will become increasingly active during periods of darkness. If they are used to being fed by humans, however, and have learned that humans pose no threat, they will sleep mostly at night when there is nothing to be gained by staying awake.
We like looking at the ones we have here but swan populations were never large enough to support any sort of commercial activity.
yes only if you eat is main liver first
Mute swans are larger species of swans that are native to Europe and Asia. Mute swans are 49-67 inches long with white feathers and orange bills.
Anything like humans, animals, and plants.