The ability of oriental magpies ( Pica serica ) to solve baited multiple-string problems

PeerJ

article

Lin Wang¹  Jinxin Guo¹  Heng jiu Tian²  Jinling Sui¹ 

[1] School of Ecology and Nature Conservation, Beijing Forestry University;Beijing Wildlife Rescue Center

关键词: Oriental magpies;    Pica serica;    Multiple-string problems;    Complex cognition;    Side bias strategy;    Corvids;   

DOI  :  10.7717/peerj.9200

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

BackgroundBaited multiple-string problems are commonly used in avian laboratory studies to evaluate complex cognition. Several bird species possess the ability to use a string pull for obtaining food. Methods We initially tested and trained 11 magpies to determine whether the oriental magpie (Pica sericia) possesses the ability to solve baited multiple-string problems. Eight of the birds obtained the bait by pulling, and were selected for formal multiple-string tasks in the second stage. Second stage tests were divided into seven tasks based on string configurations. Results Only two magpies were able to solve two tasks: one solved the task of parallel strings, and the other solved the task of slanted strings with the bait farther from the middle point between the two strings and selected the short string in the task of long-short strings. When faced with more difficult tasks (i.e., the task of slanted strings with the bait closer to the middle point between the two strings, the task with two crossing strings, and the task of continuity and discontinuity), the birds initially observed the tasks and chose instead to adopt simpler strategies based on the proximity principle, side bias strategies and trial-and-error learning. Our results indicate that the oriental magpie had a partial understanding of the principle of multiple-string problems but adopted simpler strategies.

【 授权许可】

CC BY