Never heard of attack swans
I worked with the ODNR for 30 years and never heard of swans attacking people; they only respond if pestered. They mate for life, and fertilizer is cow manure (so is swans’).
I think it’s asinine that someone took the life of an innocent swan and her eggs. I know swans are extremely common in Michigan and they won’t bother anyone, but it is natural for any animal to attack when its family is disturbed. Is the person who had the swan killed going to complain about my boot disturbing her perfectly manicured lawn? She should be liable for the swan’s death.