RULE: Black-billed Cuckoo

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

IF
Did the WINGS have STRIPES or PATCHES = {No} OR {Unknown} AND
What SIZE was the TAIL = {Long} OR {Very Long} OR {Unknown} AND
What SHAPE was the TAIL = {Square or slightly notched at the end} OR {Rounded at the end} OR {Unknown} AND
What colour PATTERN if any was on the BACK = {Uniform} OR {Unknown} AND
What colour was the BACK = {Brown, or chestnut (reddish-brown)} OR {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
What colour was the BELLY = {White, or pale (grayish-white)} OR {Orange, buff (orange-yellow), or tan} OR {Unknown} AND
What colour PATTERN if any was shown on the BREAST = {Uniform color} OR {Unknown} AND
What colour was the BREAST = {White, or pale (grayish-white)} OR {Unknown} AND
What colour was the THROAT = {White, or pale (grayish-white)} OR {Orange, buff (orange-yellow), or tan} OR {Unknown} AND
What colour was the BILL = {White, or pale (grayish-white)} OR {Blue} OR {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
What SHAPE was the BILL = {Straight and thick} OR {Downcurved} 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 = {Light area near or around the eye} OR {NONE or a PLAIN unmarked FACE} 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
What was the predominant colour of the HEAD = {Brown, or chestnut (reddish-brown)} OR {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
How BIG was the bird = {Robin-sized} OR {Pigeon-sized} AND
<What TYPE of bird was seen> = {Songbird} AND
WHEN was the bird seen = {Spring} OR {Summer} OR {Fall}
THEN
Black-billed Cuckoo (Confidence: 3)