RULE: Red-necked Grebe

<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} OR {Crow-sized} AND
<What TYPE of bird was seen> = {ID by Unique Behaviour or Jizz}
THEN
Red-necked Grebe (Confidence: 2)