Egg Retrieval as a Source of Nests with Supernormal and Mixed Egg Clutch in Little Terns Sterna albifrons
2006
Kim, J.H. (Kyung Hee University, Seoul, Republic of Korea) | Nam, H.K. (Kyung Hee University, Seoul, Republic of Korea) | Fulton, Graham R. (Edith Cowan University, Joondalup, WA, Australia) | Yoo, J.C. (Kyung Hee University, Seoul, Republic of Korea), E-mail: [email protected]
Ten supernormal clutches of little terns Sterna albifrons and seven clutches having mixed eggs by little terns and kentish plovers Charadrius alexandrinus were recorded during the breeding seasons of 2003~2005 at Ganwol lake, Hongsung-gun, Chungcheongnam-do, Korea. The frequency of egg retrieval by Little Terns was higher after the second egg laying regardless of the clutch size and incubation stage. The frequency of egg retrieval was high at all incubation stage. When experimental eggs were placed within 15 cm from the nests, the percentage of egg retrieval was highest (almost 100%).
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