RULE: Ferruginous Hawk (Dark Phase)

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

IF
Where was the white seen in flight = {Mainly on the wings} OR {On the undertail coverts} OR {On the rump or lower back} OR {Unknown} AND
Did the bird show conspicuous or promient white in flight = {Yes} OR {Unknown} AND
How was the bird SEEN BEST = {In flight} AND
What colour TAIL PATTERN was there if any = {None} OR {Unknown} AND
What colour was the BELLY = {Rufous (dull-red or rust-colored)} OR {Brown, or chestnut (reddish-brown)} OR {Black, purple, or dark} OR {Unknown} AND
What colour was the BREAST = {Rufous (dull-red or rust-colored)} OR {Brown, or chestnut (reddish-brown)} OR {Black, purple, or dark} OR {Unknown} AND
<What SHAPE was the BILL> = {Straight and thick} OR {Hooked} OR {Downcurved} OR {Unknown} AND
<What LENGTH was the BILL> = {Very short} OR {Short} OR {Unknown} AND
How BIG was the bird = {Crow-sized} OR {Goose-sized} AND
<What TYPE of bird was seen> = {Hawk-like} AND
WHERE was the bird seen = {Southwestern United States} OR {Northwestern Canada or United States}
THEN
Ferruginous Hawk (Confidence: 1)