"I didn’t know what that meant so I looked it up and it’s due to stagnant water so because the river is the way it is, it’s causing so much trouble for wildlife." "Stagnant water is an issue and proper maintenance of the river banks can, or should be taking place to prevent stagnant water from pooling." A spokesman for the fire service said: "Firefighters rescued a baby swan in the River Colne near North Station Road, Colchester on 3 August. "On arrival, crews reported a cygnet was trapped under a bridge in the River Colne and worked to rescue the swan." The bird was taken to the Wildlives Rescue and Rehabilitation Centre in Thorrington, where it began receiving intensive treatment.