Ducks and geese are both known for their vocalizations, so it would be unusual for them to be silent without making any sounds at all. However, it is possible that they may be exhibiting silent behavior such as:

Sleeping or resting quietly: Ducks and geese may remain silent while sleeping or resting during the day.

Hiding or being scared: When ducks or geese feel threatened or scared, they may remain quiet and still to avoid detection.

Mating behavior: During courtship, some species of ducks and geese may engage in silent behavior, such as head-bobbing or other non-vocal displays.

It's important to note that even if ducks and geese are not making vocalizations, they may still be communicating through body language and other non-verbal cues.