Bird Nest Question on Quiz Show

A contestant on "Who Wants to be a Millionaire?" had reached the final plateau. If she answers the next question correctly, she will win $1,000,000. If she answers incorrectly, she will pocket only $32,000 milestone money. But the million-dollar question was no push over. It was, "Which of the following species of birds does not build its own nest, but instead lays its eggs in the nests of other birds? Her choices were: A) the condor B) the buzzard C) the cuckoo D) the vulture
Not only does she not have a clue, she was doubly on the spot because she had used up her 50/50 Lifeline and her Audience Poll Lifeline. All that remained was her Phone-a-Friend Lifeline, and the contestant had hoped against hope that she would not have to use it, mainly because the only friend that she knew would be home was a blonde. But she had no alternative, so she called her friend and gave her the question and the four choices. Her blonde friend responded unhesitatingly: "That's easy. The answer is: The cuckoo." The contestant had to make a decision and make it fast. I need an answer," said Regis. Crossing her fingers, the contestant said, "C: The cuckoo."
"Is that your final answer?" asked Regis.
"Yes, that is my final answer."
Regis said, " That answer is absolutely correct. You are now a millionaire!"
Three days later, the contestant hosted a party for her family and friends including the blonde who had helped her win the million dollars.
"Jenny, I just do not know how to thank you," said the contestant. "Because of your knowing the answer to that final question, I am now a millionaire. By the way, how did you happen to know the right answer?"
"Oh, come on," said the blonde. "Everybody knows that cuckoos don't build nests. They live in clocks."
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