How many eggs usually hatch out and how many of the cygnets usually survive to adulthood?
Swans hatch up to 10 eggs at a time with the expectation of losing several of them. It is not uncommon for all the cygnets to be lost to predators, nor is it uncommon for most of them to survive – it all depends on the location and the natural protection afforded them. As the parents grow older they learn from the experience of previous years.
