RULE: Red-headed Woodpecker

<Question>
Match
{Variable}
Direct Choice
{Variable}
Infered Choice

IF
What colour was the BREAST = {White, or pale (grayish-white)} OR {Unknown} AND
What colour was the THROAT = {Red, or pink} OR {Unknown} AND
<What SHAPE was the BILL> = {Straight and slender} OR {Straight and thick} OR {Unknown} AND
<What LENGTH was the BILL> = {Medium} OR {Long} OR {Very long} OR {Unknown} AND
What colour were the CHEEKS = {Red, or pink} OR {Unknown} AND
What colour was the TOP of HEAD = {Red, or pink} OR {Unknown} AND
What was the predominant colour of the HEAD = {Red, or pink} OR {Unknown} AND
How BIG was the bird = {Robin-sized} OR {Pigeon-sized} AND
<What TYPE of bird was seen> = {Songbird} OR {Woodpecker or Tree-clinging bird} AND
<WHERE was the bird seen> = {Northwestern Canada or United States}
THEN
Red-headed Woodpecker (Confidence: 1)