RULE: Greater Scaup (Male)

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

IF
In FLIGHT did the bird display a LIGHT WING STRIPE or PATCH = {Yes} OR {Unknown} AND
What colour was the SIDE = {White, or pale (grayish-white)} OR {Unknown} AND
What colour was the BACK = {White, or pale (grayish-white)} OR {Gray, or blue-gray} OR {Unknown} AND
What colour was the BREAST = {Black, purple, or dark} OR {Unknown} AND
What colour was the THROAT = {Green} OR {Black, purple, or dark} OR {Unknown} AND
What colour was the BILL = {Blue} OR {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
<What SHAPE was the BILL> = {Flattened} OR {Unknown} AND
<What LENGTH was the BILL> = {Short} OR {Medium} OR {Long} OR {Unknown} AND
What FACIAL or HEAD features were noted if any = {NONE or a PLAIN unmarked FACE} OR {Unknown} AND
What colour were the EYES = {White or light gray} OR {Yellow or olive} OR {Unknown} AND
What was the predominant colour of the HEAD = {Green} OR {Black, purple, or dark} OR {Unknown} AND
<How BIG was the bird> = {Pigeon-sized} OR {Crow-sized} AND
<What TYPE of bird was seen> = {Duck or Goose-like}
THEN
Greater Scaup (Confidence: 3)