Although Taillow nest in small families, when the young leave the nest they join flocks that can number in the hundreds. These flocks are dangerous, as Taillow has no fear of guard Pokémon and will not hesitate to wipe out entire outdoor markets.

The Complete Thief’s Handbook has a chapter on Swellow falconry: train them to swipe small objects from unsuspecting victims in a dive, then fly away before they can be battled. If the Swellow picks up a Klefki, the thief is encouraged to leave it behind.