park

Today when I went down to the park, was partly cloudy and wet. When I was on the breakwater, I saw some seagulls, ducks and some sort of loon farther out. When I was by sage beach, I saw some chickadees. When I was in the park, I saw a winter wren and a thrush in the bushes. When I was nearing the battle site bench, I saw a raven walking on the ground by the trail, and it flew away into the clearing on the other side of the trees. when it saw me. When I was at the battle site bench, I saw something like small truck that the park uses parked by the bench. I had seen it before in the park recently . It was also low tide and I saw some seagulls and crows. When I was by the trail by the river, I saw some seagulls. When I was on the trail by the river, I saw some seagulls and ducks on the other side of the river.
What is the truck thing called?
Why have I seen it in the park recently?
Why do the ducks always seem to be on the other side of the river.