RULE: Violet-green Swallow

IF: How did the bird fly = {Swallow-like} AND
How BIG was the bird = {Smaller than a sparrow} OR {Sparrow-sized} AND
List any unique FEEDING or other BEHAVIOUR observed = {Unknown or None of These} AND
<What TYPE of bird was seen> = {ID by Unique Behaviour or Jizz} AND
WHERE was the bird seen = {Southwestern United States}