[c.spots]

Just because your bird may thoroughly enjoy sailing, it doesn't mean that all counties will welcome them - including trying to bring them back to the US. Issues include restricted areas, extra sign in and out, possible confiscation, quarantines, veterinary hassles, and not being able to tie up to a dock.
There are people who avoid or seriously limit travel to pet hostile countries, some of which are not otherwise bad places (Australia, and New Zealand to name two more large ones).