RULE: Curlew Sandpiper

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

IF
What colour were the LEGS or FEET = {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
Was the RUMP or LOWER BACK light = {Yes} OR {Unknown} AND
What colour was the BACK = {Rufous (dull-red or rust-colored)} OR {Brown, or chestnut (reddish-brown)} OR {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
What colour was the BELLY = {White, or pale (grayish-white)} OR {Rufous (dull-red or rust-colored)} OR {Brown, or chestnut (reddish-brown)} OR {Unknown} AND
What colour was the BREAST = {Rufous (dull-red or rust-colored)} OR {Brown, or chestnut (reddish-brown)} OR {Unknown} AND
What colour was the THROAT = {Rufous (dull-red or rust-colored)} OR {Brown, or chestnut (reddish-brown)} OR {Unknown} AND
What colour was the BILL = {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
What SHAPE was the BILL = {Straight and slender} OR {Straight and thick} OR {Downcurved} OR {Unknown} AND
What LENGTH was the BILL = {Long} OR {Very long} OR {Unknown} AND
How BIG was the bird = {Sparrow-sized} OR {Robin-sized} AND
<What TYPE of bird was seen> = {Sandpiper-like} AND
WHEN was the bird seen = {Spring} OR {Summer}
THEN
Curlew Sandpiper (Confidence: 1)