一听到‘布谷鸟’这个名字，大家会联想到它动听的歌声，优美的体态，美好的象征... 殊不知，布谷鸟的一身是一个罪恶的演绎：雌性布谷鸟把蛋下在其他鸟类的巢中，布谷鸟幼鸟刚出生，双眼没张开，就开始把巢中的其他鸟蛋甚至幼鸟推出巢外... 各种布谷鸟的恶行，都在此纪录片中一一展现。 看似美好，真的就是美好吗？停止想象吧。 （文：白色扉页）
Cambridge ornithology professor Nick Davies helps David Attenborough explain the parasitical brood-behavior of the cuckoo. It specifically targets 20 European species (4 British, including the warbler) and lays an egg (extremely similar to the other birds) in the nest. This hatches only to kill the hosts' own offspring and steal all of the food provided, possibly by producing a fast feeding call simulating a whole brood. The study intends to understand the sharply declining species.
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