RULE: Mexican Chickadee

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

IF
Was the bird seen in ARIZONA, NEW MEXICO, or TEXAS = {Yes} AND
Did the WINGS have STRIPES or PATCHES = {No} OR {Unknown} AND
What colour was the BACK = {Blue} OR {Brown, or chestnut (reddish-brown)} OR {Gray, or blue-gray} OR {Unknown} AND
What colour was the BELLY = {White, or pale (grayish-white)} OR {Orange, buff (orange-yellow), or tan} OR {Gray, or blue-gray} OR {Unknown} AND
What colour was the BREAST = {White, or pale (grayish-white)} OR {Gray, or blue-gray} OR {Black, purple, or dark} OR {Unknown} AND
What colour was the THROAT = {Black, purple, or dark} OR {Unknown} AND
What SHAPE was the BILL = {Straight and slender} OR {Straight and thick} OR {Conical and slender} OR {Unknown} AND
What LENGTH was the BILL = {Very short} OR {Short} OR {Medium} OR {Unknown} AND
What FACIAL or HEAD features were noted if any = {Light area between the bill and the eye} OR {Light area near or around the eye} OR {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 = {White, or pale (grayish-white)} OR {Black, purple, or dark} OR {Unknown} AND
How BIG was the bird = {Smaller than a sparrow} OR {Sparrow-sized} AND
<What TYPE of bird was seen> = {Warbler-like} OR {Songbird} AND
WHERE was the bird seen = {Southwestern United States}
THEN
Mexican Chickadee (Confidence: 1)