As it turned out, there were no worries. We couldn't find the eagles so we just had a nice walk in the woods on one of the trails. I really like walking in the woods--lots of good smells--so it was a great happy birthday trip.
Later Mom and Dad brought us home and went to the river to try and see a different set of eagles. They found two, and Mom said they even got a few decent pictures. She posted them on her blog (see link on the right) if anyone is interested.