Cygnet. It’s an unusual word, a strange combination of letters, so I checked the Oxford Dictionary for its origin: ‘Late Middle English from Anglo-Norman French cignet, diminutive of Old French cigne ‘swan’, based on Latin cycnus, from Greek kuknos‘.
The Mute swan cygnets below are some of this year’s fledglings in Cardiff Bay. They’re now mostly living independently from their parents, though still like to keep close company with their siblings.