Which Bird does not make a nest?

Absolute Classic!!!

The guy is on his final question for 5crore on ‘KBC’, and has one lifeline left, ‘Phone A Friend’,

And the Question was…

“Which Bird does not make a nest?”
1: Sparrow

2: Swallow

3: Blackbird

4: Cuckoo

The guy is not sure, so he calls his girlfriend.

She answers, “Stupid, it’s obviously a cuckoo, 100%” and the guy wins.

Later the guy calls his girlfriend, “how the hell did you know that, honey? I must say you’ve got more brains than I credit you for!”

And the sweet thing replies:
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.”Well…., u idiot, cuckoo lives in a wall clock na!”

The guy is still in coma..