RULE: Masked Duck

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

IF
What behaviour was shown in the water = {Sinking below the surface or with most or all of its body submerged} AND
Was the bird seen swimming in the water = {Yes} AND
How BIG was the bird = {Robin-sized} OR {Pigeon-sized} AND
<What TYPE of bird was seen> = {ID by Unique Behaviour or Jizz} AND
WHERE was the bird seen = {Southeastern United States}
THEN
Masked Duck (Confidence: 1)