RULE: Green Sandpiper

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

IF
Was the bird seen in ALASKA = {Yes} AND
What color was the UNDERSURFACE of the wing as seen in flight = {Dark} OR {Unknown} AND
In FLIGHT did the bird display a LIGHT WING STRIPE or PATCH = {No} OR {Unknown} AND
What colour were the LEGS or FEET = {Yellow} OR {Olive (yellowish-green)} OR {Green} OR {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 BELLY = {White, or pale (grayish-white)} OR {Unknown} AND
What colour was the BREAST = {White, or pale (grayish-white)} OR {Gray, or blue-gray} OR {Unknown} AND
What colour was the THROAT = {White, or pale (grayish-white)} OR {Gray, or blue-gray} OR {Unknown} AND
What SHAPE was the BILL = {Straight and slender} OR {Straight and thick} OR {Unknown} AND
What LENGTH was the BILL = {Medium} OR {Long} OR {Unknown} AND
What FACIAL or HEAD features were noted if any = {Light area between the bill and the eye} OR {NONE or a PLAIN unmarked FACE} OR {Unknown} AND
How BIG was the bird = {Sparrow-sized} OR {Robin-sized} AND
<What TYPE of bird was seen> = {Sandpiper-like} AND
WHERE was the bird seen = {Northwestern Canada or United States}
THEN
Green Sandpiper (Confidence: 1)