Whooper Swan at sundown, WWT Welney, 2nd January.

This bird is one of a handful that have been diseased or injured and can no longer fly north to their breeding grounds at the end of the winter, so they're resident on the wetland.

Several thousand migrants would eventually come to roost on the water after feeding across the farmland during the day, those birds will mostly depart at the end of the winter.

The "W" is silent, as it is in whooping cough, whole, wholesome, wholesale, etc