jantimont,
you say
But you might find that a dragonfly's environment might not be more than half a metre either
way off,
Dragonflys have been known to travel 11 000 miles
http://www.dailymail.co.uk/sciencetech/article-1200054/Longest-insect-migration-dragonflies-fly-11-000-mile-round-trip-ocean.html
bit more than a metre
