RULE: Black-billed Magpie

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

IF
Did the WINGS have STRIPES or PATCHES = {Yes} OR {Unknown} AND
What SIZE was the TAIL = {Long} OR {Very Long} OR {Unknown} AND
What colour was the BACK = {White, or pale (grayish-white)} OR {Black, purple, or dark} OR {Unknown} AND
What colour was the BELLY = {White, or pale (grayish-white)} OR {Black, purple, or dark} OR {Unknown} AND
What colour was the BREAST = {White, or pale (grayish-white)} OR {Black, purple, or dark} OR {Unknown} AND
What colour was the THROAT = {Black, purple, or dark} OR {Unknown} AND
What colour was the BILL = {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
What SHAPE was the BILL = {Straight and thick} OR {Conical and slender} OR {Conical and thick} 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 was the TOP of HEAD = {Black, purple, or dark} 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> = {Songbird} AND
<WHERE was the bird seen> = {Northeastern Canada or United States} OR {Southeastern United States}
THEN
Black-billed Magpie (Confidence: 1)