Crossword Clue:

PENGUIN a flightless aquatic bird

AnswerCrossword Clue
RHEAA flightless bird
EMULATECopy a flightless bird?
RIOAnimated film about a flightless bird
EMUBRAINS"I wanted a SUBMARINE, but that lab experiment left me with ...! (Now I think like a flightless bird)"
GREBEAquatic bird similar to a loon