RULE: Snow Goose (Blue Phase)

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

IF
What colour were the LEGS or FEET = {Red, or pink} OR {Unknown} AND
What colour were the WING TIPS = {Black or dark gray} OR {Unknown} AND
What colour was the BACK = {Blue} OR {Brown, or chestnut (reddish-brown)} OR {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
What colour was the BREAST = {Blue} OR {Brown, or chestnut (reddish-brown)} OR {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
What colour was the THROAT = {White, or pale (grayish-white)} OR {Unknown} AND
What colour was the BILL = {Red, or pink} OR {Unknown} AND
<What SHAPE was the BILL> = {Flattened} OR {Unknown} AND
<What LENGTH was the BILL> = {Medium} AND
What was the predominant colour of the HEAD = {White, or pale (grayish-white)} OR {Unknown} AND
<How BIG was the bird> = {Crow-sized} OR {Goose-sized} OR {Larger than a goose} AND
<What TYPE of bird was seen> = {Duck or Goose-like}
THEN
Snow Goose (Confidence: 3)