PDF(Pubmed)
Abstract：
When host nests are scarce, avian brood parasites would benefit from behaviours that increase the availability of suitable nests. Several studies reported ejection of host nestlings from nests by brood parasites; however, whether brood parasites do so to induce the host to re-nest and thus increase opportunities for future parasitism (i.e. \'farming\' behaviour) remains unclear. Here, we report observational evidence of farming behaviour by a common cuckoo Cuculus canorus female in a Daurian redstart Phoenicurus auroreus population: (1) the cuckoo destroyed a host nest by ejecting all nestlings, (2) the host then produced a new nest and (3) the cuckoo successfully parasitized the replacement nest. We suggest that farming behaviour may be more common, but often goes undetected because it requires intense nest monitoring.
摘要：
当寄主巢穴稀少时，禽类寄生虫将受益于增加合适巢可用性的行为。一些研究报告说，寄主雏鸟被育巢寄生虫从巢中排出；然而，育龄寄生虫是否会诱导寄主重新筑巢，从而增加未来寄生虫(即“养殖行为”)的机会，目前尚不清楚。这里,我们报告了观察到的证据，表明在DaurianredstartPhoenicurusaureus种群中普通杜鹃Cuculuscanorus雌性的耕作行为：（1）杜鹃通过喷射所有雏鸟来摧毁寄主巢，（2）寄主然后产生了一个新的巢，（3）布谷鸟成功地寄生了替代巢。我们建议耕作行为可能更常见，但经常没有被发现，因为它需要强烈的巢穴监测。
