I so enjoyed your story idea and the scene of the woods near your home: the squirrel in the tree, the tire swing, the brook winding its way through the woods and, of course, the fish swimming upstream.
I just got back from a walk in our local wooded park with my puppy, Ivy. We try to go off-trail as much as possible, and take small footpaths through the woods. We cross over small brooks, and today I stood for a bit, waiting to hear the spring peepers (little frogs). They are not peeping yet; too early I guess. I bring a whistle with me just in case I get lost, because it is a very big park.