RULE: Green Heron

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

IF
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 {Orange, buff (orange-yellow), or tan} OR {Red, or pink} OR {Rufous (dull-red or rust-colored)} OR {Olive (yellowish-green)} OR {Green} OR {Gray, or blue-gray} OR {Unknown} AND
What colour was the BACK = {Green} OR {Blue} OR {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 {Unknown} AND
What LENGTH was the BILL = {Long} OR {Very long} OR {Unknown} AND
What colour were the CHEEKS = {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 TOP of HEAD = {Brown, or chestnut (reddish-brown)} OR {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
How BIG was the bird = {Pigeon-sized} OR {Crow-sized} OR {Goose-sized} AND
<What TYPE of bird was seen> = {Chicken-like marsh bird} OR {Long-legged wader} AND
<WHERE was the bird seen> = {Northeastern Canada or United States} OR {Northwestern Canada or United States}
THEN
Green Heron (Confidence: 2)