RULE: Great Egret

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

IF
What colour were the LEGS or FEET = {Black, purple, or dark} OR {Unknown} AND
What colour was the BACK = {White, or pale (grayish-white)} OR {Unknown} AND
What colour was the THROAT = {White, or pale (grayish-white)} OR {Unknown} AND
What colour was the BILL = {Yellow} OR {Orange, buff (orange-yellow), or tan} 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 was the TOP of HEAD = {White, or pale (grayish-white)} OR {Unknown} AND
How BIG was the bird = {Crow-sized} OR {Goose-sized} AND
<What TYPE of bird was seen> = {Long-legged wader} AND
<WHERE was the bird seen> = {Northeastern Canada or United States} OR {Northwestern Canada or United States}
THEN
Great Egret (Confidence: 1)