21. Which bird builds impressive mud nests on cliffs or man-made structures?
a) Swallow
b) Sparrow
c) Robin
d) Kingfisher
Answer: a) Swallow
22. Which bird is known for its ability to mimic sounds, including car alarms and phone ringtones?
a) Starling
b) Sparrow
c) Vulture
d) Falcon
Answer: a) Starling
23. Which bird can hold its breath for up to 100 minutes while underwater diving?
a) Penguin
b) Cormorant
c) Osprey
d) Kiwi
Answer: b) Cormorant
24. Which bird has the largest brain-to-body ratio among all bird species?
a) Crow
b) Eagle
c) Ostrich
d) Duck
Answer: a) Crow
25. Which bird is known for its elaborate and colorful courtship display in the shape of a heart?
a) Dove
b) Puffin
c) Woodpecker
d) Kingfisher
Answer: b) Puffin
