Five Little Ducks - They went all over the hill and far away, can you help Mom Duck to count her baby ducks?

Mom Duck takes care of her little baby ducks because sometimes they like to go far away from her to explore new places in the lake, but quacking can be the solution. Nobody knows, but one day the five little ducks went over the will, but one of them was always missing when they returned. Mom Duck is worried, can you help her?