Stuck?  An answer is here.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

B: The Duck Croaks

1. A duck comes up from bottom left and swims across the stream.

2. She wanders around eating something to the left of the bush.

3. A fox comes in from upper right and, using the bush as a shield, surprises her.

4. The fox carries the duck to the front of the bush where he eats the duck, walking in place.

5. The fox walks off.

(Note:  We have no way of telling how long any of this took.  For example, the duck may have swum around for hours, for all we know.)