park

Today when I went down to the park for the second time today, it was cloudy.
When I was nearing the harbor, I saw some eagles. One was in a tree and the other was flying.
When I was on the breakwater, I saw two ducks, some sea gulls, and a great blue heron on a post out in the water.
When I was on the side walk by sage beach, I saw some shore birds on the rocks.
When I was at the beginning of the park, I saw some seaweed on the grass.
When I was in the park, I saw some people and a dog out on the beach that was still out of the water.
When I was at the battle site bench, it was high tide.
When I was on the trail by the river, it was a bit more windy than it had been before and I saw nine swans, some mergansers and ducks on the other side of the river.
When I was near the end of the trail by the river, I saw some ducks and wigeons in the water and on the grass on the side of the river I was on.
Why was the great blue heron on the post?
Why was the seaweed in the grass?
Why were some of the ducks on the side of the river I was on?