Encouraged by the swans' reaction to a recent serenade by French horns, my friend Paulette (R), and her friend Jennifer (L), used their violins to sweet-talk the swans on Jennifer's dad's pond. When the women and their violins left, I heard this nesting pair trumpet loudly. It seemed to me they were calling the musicians to return. Perhaps there is a clue in the word "trumpet" -- used to name a musical instrument as well as the call of the swan.
In the same pond, I saw a pair of Canada geese, as well as a pair of ducks followed by their half-grown ducklings.