Message from The Editor-in-chief
　　Masahiko Nakamura 　　p. 1

Bio-logging science in the ecological study of seabirds in Japan
　　Yoshihisa Mori 　　p. 3 - 4

Plunging Behaviour in Chick-rearing Brown Boobies
　　Ken Yoda and Hiroyoshi Kohno 　　p. 5 - 13

Dive angle, swim speed and wing stroke during shallow and deep dives in Common Murres and Rhinoceros Auklets
　　Yutaka Watanuki and Katsufumi Sato 　　p. 15 - 28

Post-breeding movement and activities of two Streaked Shearwaters in the north-western Pacific
　　Akinori Takahashi, Daisuke Ochi, Yutaka Watanuki, Tomohiro Deguchi, Nariko Oka, Vsevolod Afanasyev, James W. Fox and Philip N. Trathan 　　p. 29 - 35

Estimating foraging area of Rhinoceros Auklets by simultaneous sampling of water temperature profiles using bird-borne data-loggers
　　Kei Matsumoto, Tomohiro Deguchi, Akihiko Wada, Akiko Kato, Sei-ichi Saitoh and Yutaka Watanuki 　　p. 37 - 46

Road ecology from a road-side assemblage of forest birds in south-western Australia
　　Graham R. Fulton, Mercedes Smith, Choi Mee Na and Sanae Takahashi 　　p. 47 - 57

Wood hardness in nest trees of the Great Spotted Woodpecker Dendrocopos major
　　Shigeru Matsuoka 　　p. 59 - 66

Seasonal profiles of sex steroid hormones and corticosterone of Silver Pheasant Lophura nycthemera jonesi maintained in captivity
　　Panas Tumkiratiwong, Kan Kumsurb and Veerapol Boonchudoung 　　p. 67 - 73

Variability in preference for conspecific songs with syntactical complexity in female Bengalese Finches: towards an understanding of song evolution
　　Tadamichi Morisaka, Kentaro Katahira and Kazuo Okanoya 　　p. 75 - 84

Distribution of the Japanese Wagtail Motacilla grandis in Korea
　　Chang-Yong Choi and Hyun-Young Nam 　　p. 85 - 91

Seasonal change and interspecific comparison of foraging behavior in two heron species
　　Yoshihide Takaki and Kazuhiro Eguchi 　　p. 93 - 97

Migration route and wintering area of Northern Goshawk Accipiter gentilis breeding in Hokkaido, northern Japan
　　Takuma Kudo 　　p. 99 - 102