Agitating by the natural nest den-master

Egg eating by the natural nest den-master

Tail fanning by the artificial nest den-master

The Wolf’s Den

Nest defence against a brood parasite by a male Japanese bush warbler

Nest defence against a brood parasite by a female Japanese bush warbler

Worker oviposition and oophagy by the gamergate in Diacamma sp. from Japan

Nest predation of the Japanese marsh warbler by the Japanese least weasel

Intrusion of cuckold male bluegill into spawning nest

Nestlings predation by raccoon dog in the Eastern Crowned Leaf Warbler’s nest

Predation of a Ryukyu Scops Owl Nest on Hateruma Island by a Japanese Weasel

the guard of eggs by paternal millipede, Brachycybe nodulosa Verhoeff

Spawning of "Luciola cruciata" (1); Simultaneous spawning by multiple females

Predation of a Ryukyu Scops Owl Nest on Minami-daito Island by a Japanese Weasel

Predation of a Ryukyu Scops Owl Nest on Minami-daito Island by a Japanese Weasel

Predation of a Ryukyu Scops Owl Nest on Minami-daito Island by a Japanese Weasel

Nestlings predation by Japanese rat snake in the Eastern Crowned Leaf Warbler’s nest

Indiscriminate consumption of unrelated eggs by a gravid female and a satellite male in natural nests

Pair spawning by territorial male of pteragogus aurigarius

Spitting of Japanese-bitterling eggs by the bivalve Anodonta woodiana

自然下におけるイタセンパラの産卵行動

Removal of the Eastern Crowned Leaf Warbler's nestling by the Oriental Cuckoo chick

Group　spawning by non-territorial male of P.aurigarius

"Human and Natural Forms" A

"Human and Natural Forms" D