RULE: Black Rail

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

IF
Were the SIDES STREAKED, SPOTTED or BARRED = {Yes} 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 = {Black, purple, or dark} 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 {Unknown} AND
How BIG was the bird = {Smaller than a sparrow} OR {Sparrow-sized} OR {Robin-sized} AND
<What TYPE of bird was seen> = {Chicken-like marsh bird} AND
WHERE was the bird seen = {Northeastern Canada or United States} OR {Southeastern United States} OR {Southwestern United States}
THEN
Black Rail (Confidence: 3)