Stowaway suggests unauthorized travel, which is illegal and can have serious consequences.

Negative Connotation

A stowaway hides on vehicles like ships or planes, often in cramped and unsafe conditions.

Hidden Travelers

Being discovered as a stowaway often leads to being turned over to authorities and potentially facing penalties.

Discovery Consequences

 where there are no predators. As long as these predator-free circumstances last, the birds thrive, but they are vulnerable to changes in their environment. For instance, human settlers bring dogs, cats, and stowaway rodents to islands. These animals often prey on flightless birds