How do Black-tailed Gulls respond to long-call displays of other individuals?
　　Shinji YABUTA, Hiroko KAWAKAMI and Akira NARITA 　　p. 109 - 114

The egg dilution effect hypothesis: a condition under which parasitic nestling ejection behaviour will evolve
　　Nozomu J SATO, Osamu K MIKAMI and Keisuke UEDA 　　p. 115 - 121

Morphological and behavioral traits of a wild hybrid Eurasian Wigeon X Falcated Duck male found at Hyo-ko Waterfowl Park, Niigata, Japan
　　Akira CHIBA and Rhyuhei HONMA 　　p. 123 - 130

First Breeding Record of Japanese Night Heron Gorsachius goisagi in Korea
　　Hongshik OH, Youngho KIM and Namkyu KIM 　　p. 131 - 134

Habitat selection among nesting, foraging, and singing sites of the Gray-cheeked Fulvetta Alcippe morrisorzia in northeastern Taiwan
　　Pei-Yin LEE, Lih-Jih WANG, Huang-Che HSU, Lien-Siang CHOU and Chao-Chieh CHEN 　　p. 135 - 140

Mating advantage of multiple male ornaments in the Barn Swallow Hirundo rustica gutturalis
　　Masaru HASEGAWA, Emi ARAI, Mamoru WATANABE and Masahiko NAKAMURA 　　p. 141 - 148

Body mass changes of Japanese Rock Ptarmigan Lagopus mutus japonicus in captivity
　　Shin-ichi HAYAMA, Chisato HATTORI, Yuria OHATA and Norio MIYANO 　　p. 149 - 155

Dawn trips made by the male Grey Thrush Turdus cardis to search for second mates
　　Toru ISHIZUKA 　　p. 157 - 160

Low level of extra-pair paternity in a population of the Barn Swallow Hirundo rustica gutturalis
　　Masaru HASEGAWA, Emi ARAI, Wataru KOJIMA, Wataru KITAMURA, Go FUJITA, Hiroyoshi HIGUCHI, Mamoru WATANABE and Masahiko NAKAMURA 　　p. 161 - 164