park

Today when I went down to the park for the second time, it was cloudy and raining.
When I was by the harbor, I saw a caterpillar in the grass and a song sparrow out on the rocks by the water.
When I was walking out to the end of the breakwater, there was a sea gull and some crows on the railing but most of them flew away when I walked by.
When I was out on the breakwater, I saw an eagle out on one of the posts in the water, and I saw a bunch of sea gulls on the shore.
When I walked back from the end of the break water,the crows that hadn’t flown away before flew away.
When I was by the battle site bench, I saw some crows on the beach by the water.
When I was at the battle site bench, it was high tide.
When I was on the trail by the river, I saw two swans, some ducks and some goldeneyes.
When I was on my way back home by sage beach, I saw some shorebirds out on some rocks.
What type of caterpillar was it?
Why have the two swans stayed near the park?
Why were the crows by the water?