A funny story from a trip in 1986......
Eric skipped the welcome to Alcatraz speech and went exploring. He missed the part about not straying beyond the yellow ropes, 'because if the rangers don't see you, the birds will'.
Some of us left the island early, and spied Eric on our ferry.
He said that after crossing the yellow ropes, he was surrounded by seagulls. A ranger asked if he spoke English. When he replied yes, the ranger said come with me, you are leaving the island.
As Eric turned to walk away, we had one final laugh - a large white patch of bird crap covered his knapsack.