RULE: Red-billed Tropicbird

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

IF
What colour were the WING TIPS = {Black or dark gray} OR {Unknown} AND
What SIZE was the TAIL = {Long} OR {Very Long} OR {Unknown} AND
What SHAPE was the TAIL = {Pointed or wedge-shaped} OR {Forked} 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 BREAST = {White, or pale (grayish-white)} OR {Unknown} AND
What colour was the THROAT = {White, or pale (grayish-white)} OR {Unknown} AND
What colour was the BILL = {Orange, buff (orange-yellow), or tan} OR {Red, or pink} OR {Unknown} AND
<What SHAPE was the BILL> = {Straight and slender} OR {Straight and thick} OR {Hooked} OR {Unknown} AND
<What LENGTH was the BILL> = {Medium} OR {Long} OR {Unknown} AND
What colour was the TOP of HEAD = {White, or pale (grayish-white)} OR {Unknown} AND
What was the predominant colour of the HEAD = {White, or pale (grayish-white)} OR {Unknown} AND
How BIG was the bird = {Crow-sized} OR {Goose-sized} OR {Larger than a goose} AND
<What TYPE of bird was seen> = {Gull-like, or a Seabird} AND
What type of ENVIRONMENT was the bird seen in = {Open ocean; beyond sight of land} OR {In flight over saltwater} AND
WHERE was the bird seen = {Southwestern United States} OR {Northwestern Canada or United States}
THEN
Red-billed Tropicbird (Confidence: 1)