All in a day’s left the secret message on the old bridge at the end?

The day’s adventure starts off with a cloudy sunrise in Northern Siskiyou County, California. At the 3:30 mark, we fly over Lake Shasta toward the Lava Caverns. Finally at the 5:20 mark, we soar through the bridges of the Sacramento River delta under the warning of protective birds plus see a secret and hidden-in-plain-sight message for who left the message? Original music - “Silver Toes“ - Dead Nephil, copyright 2023 Benjamin Andrew Grossman, All rights reserved. #california #fpv #dji #fpvcinematic #fpvdrone #fpvlife #mtshasta #mini3pro #shastalake #shasta #sacramentoriver #bridge #birds #secret #hidden #hiddeninplainsight #clouds #timelapse #birdattack #flockofbirds