A _______ can eat only when its head is upside down.
-
vulture
-
rooster
-
flamingo
-
ant
C
Correct answer
Explanation
Flamingos must feed with their heads upside down because their bills are specially adapted to filter-feed. Their unique upper mandible structure functions like a sieve when inverted, allowing them to strain small organisms from water. Vultures, roosters, and ants have normal feeding postures.