Tributes have been paid to Bert the swan, right, who was run over on Sunday Tributes have ... The swans have lived at the marina for 10 years. The birds can be monogamous and pairs stay together ...

A black swan ... A study of bird populations in 2012 found there were just 37 confirmed nesting pairs in the UK. Residents told the BBC the swan had been seen regularly over the last week.

Nine mute swans have died at a wetland reserve in East Yorkshire in an outbreak of avian flu. The first swan died at North ...