RULE: White-winged Scoter (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 were the LEGS or FEET = {Orange, buff (orange-yellow), or tan} OR {Red, or pink} OR {Unknown} AND
What colour was the SIDE = {Black, purple, or dark} OR {Unknown} AND
What colour was the BACK = {Black, purple, or dark} OR {Unknown} AND
What colour was the BREAST = {Black, purple, or dark} OR {Unknown} AND
<What colour was the THROAT> = {Black, purple, or dark} OR {Unknown} AND
What colour was the BILL = {Orange, buff (orange-yellow), or tan} OR {Red, or pink} OR {Black, purple, or dark} OR {Unknown} AND
<What SHAPE was the BILL> = {Flattened} 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 near or around the eye} 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 = {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
White-winged Scoter (Confidence: 4)