RULE: Common Moorhen

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

IF
What colour were the LEGS or FEET = {Yellow} OR {Olive (yellowish-green)} OR {Green} OR {Gray, or blue-gray} OR {Unknown} AND
What colour was the SIDE = {White, or pale (grayish-white)} OR {Brown, or chestnut (reddish-brown)} OR {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
<What colour was the BACK> = {Brown, or chestnut (reddish-brown)} OR {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
What colour PATTERN if any was shown on the BREAST = {Uniform color} OR {Unknown} AND
What colour was the BREAST = {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
What colour was the THROAT = {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
What colour was the BILL = {Yellow} OR {Red, or pink} OR {Unknown} AND
<What SHAPE was the BILL> = {Straight and thick} OR {Conical and thick} OR {Flattened} OR {Unknown} AND
<What LENGTH was the BILL> = {Very short} OR {Short} OR {Medium} OR {Long} OR {Unknown} AND
What was the predominant colour of the HEAD = {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
<How BIG was the bird> = {Pigeon-sized} OR {Crow-sized} AND
<What TYPE of bird was seen> = {Chicken-like marsh bird} OR {Duck or Goose-like} AND
<WHERE was the bird seen> = {Northeastern Canada or United States} OR {Southeastern United States} OR {Southwestern United States}
THEN
Common Moorhen (Confidence: 3)