Noiselessly they swam among the brown stalks until they could see out across the Big River . There was another little splash out there in the middle . It was n't the splash made by a fish ; it was a splash made by something much bigger than any fish . Presently they made out a silver line moving towards them from the Black Shadows . They knew exactly what it meant . It meant that some one was out there in the Big River moving towards them . Could it be a boat containing a hunter ? With their necks stretched high , Mr. and Mrs. Quack watched . They were ready to take to their strong wings the instant they discovered danger . But they did not want to fly until they were sure that it WAS danger approaching . They were startled , very much startled . Presently they made out what looked like the branch of a tree moving over the water towards them . That was queer , very queer . Mr. Quack said so . Mrs. Quack said so . Both were growing more and more suspicious . They could n't understand it at all , and it is always best to be suspicious of things you can not understand . Mr. and Mrs. Quack half lifted their wings to fly . CHAPTER XXX : The Mystery Is Solved It was very mysterious . Yes , Sir , it was very mysterious .
Mr. XXXXX thought so .
CHAPTER Quack River XXX danger fish instant stalks things tree