RULE: White-headed Woodpecker

IF: How BIG was the bird = {Sparrow-sized} OR {Robin-sized} AND
List any unique FEEDING or other BEHAVIOUR observed = {Climbing up tree trunks} OR {Drumming by banging its head on a tree} AND
<What TYPE of bird was seen> = {ID by Unique Behaviour or Jizz} AND
WHERE was the bird seen = {Southwestern United States} OR {Northwestern Canada or United States}