We are pleased to publish the second special issue on avian brood parasitism and to be responsible guest editors for the two special issues of Chinese Birds (Vol.3,No.4,2012 and Vol.4,No.1,2013),entitled “Avian Brood Parasitism — A Growing Research Area in Behavioral Ecology”.The first issue was published in December 2012.rnThe goal of the two special issues is to publish accumulated knowledge and some of the recent developments in the fascinating research occurring in avian brood parasitism and to stimulate further research in this attractive field.The papers in the two special issues are based on “The 3rd International Conference on Avian Brood Parasitism” that was held at Hainan Normal University,China,during November 15-19,2012,where more than 40 scientists on avian brood parasitism met and shared their knowledge.We share some of the discussions from the conference with the readers of Chinese Birds in the two special issues.