Well that makes sense why there are all these dark feathers around.
When I watch this cam, you can see the chick calling to the parent and the parent responds and goes to the chick but immediately returns to the eggs. This little one must be extremely hungry and that's why it keeps calling out. I hope someone gets down there to remove those eggs and do something to help this family out. This is only causing more stress for the birds especially after an intruder was, from the sounds of it, way too close for comfort.