The term 'KIND OF SWAN' can be solved by the crossword solution 'MUTE', which is a four-letter word. MUTE swans are a species of swan native to much of Europe and parts of Asia. They are the largest swan species in the world, with adults measuring up to 1.5 meters in length and weighing up to 15 kilograms. MUTE swans are easily recognizable by their bright white plumage and orange bills. They are also known for their loud honking calls, which can be heard from up to a mile away.