RULE: Common Eider (Male)

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

IF
What colour was the SIDE = {Black, purple, or dark} OR {Unknown} AND
What colour was the BACK = {White, or pale (grayish-white)} OR {Black, purple, or dark} OR {Unknown} AND
What colour was the BREAST = {White, or pale (grayish-white)} OR {Yellow} OR {Orange, buff (orange-yellow), or tan} OR {Red, or pink} OR {Unknown} AND
What colour was the THROAT = {White, or pale (grayish-white)} OR {Unknown} AND
What colour was the BILL = {White, or pale (grayish-white)} OR {Yellow} OR {Orange, buff (orange-yellow), or tan} OR {Olive (yellowish-green)} OR {Green} OR {Black, purple, or dark} OR {Unknown} AND
<What SHAPE was the BILL> = {Flattened} OR {Unknown} AND
<What LENGTH was the BILL> = {Medium} OR {Long} OR {Unknown} AND
What FACIAL or HEAD features were noted if any = {Dark area near the eye} OR {NONE or a PLAIN unmarked FACE} OR {Unknown} AND
What colour were the EYES = {Red, orange or rusty} OR {Brown or blackish brown} OR {Black or dark gray} OR {Unknown} AND
What was the predominant colour of the HEAD = {White, or pale (grayish-white)} OR {Green} OR {Black, purple, or dark} OR {Unknown} AND
<How BIG was the bird> = {Crow-sized} OR {Goose-sized} AND
<What TYPE of bird was seen> = {Duck or Goose-like} AND
WHERE was the bird seen = {Northeastern Canada or United States} OR {Northwestern Canada or United States}
THEN
Common Eider (Confidence: 4)