Undirected song behavior of a male Bengalese finch

Song behavior of a father Bengalese finch

Courtship behavior of a male Bengalese finch

Courtship and mating behavior of Bengalese finch

Development of song in the Bengalese finch: Crystallized song (120 days of age)

Development of song in the Bengalese finch: Plastic song (78 days of age)

Development of song in the Bengalese finch: Sub song (50 days of age)

Development of song in the Bengalese finch: Sub song (63 days of age)

Bengalese finch failed attempt at courting

A solo song of the male gibbon

Nest visiting behavior of male staghorn damselfish

Male-male fighting behavior of the seed bug, Togo hemipterus

Male-male sexual behavior in Cobitis magnostriata

Foraging behavior of a polychaeta

Chasing and sneaking behavior of male Japanese bitterling

Feeding behavior of a flower beetle

Display behavior of a mail bonobo

Mating behavior and male gathering of the white tailed zygaenid moths

Foraging behavior of a kleptoparasitic spider Argyrodes kumadai

Feeding behavior of a vermetid gastropod, Serpulorbis imbricatus

A solo song of the male gibbon playing with his son

The re-invasion behavior of Japanese scorpionfly males that lost the male-male competition

The robbing behavior of a jumping spider Silerella vittata

Paraoviposition of a male Sympetrum eroticum eroticum

Male-male agonistic behavior of Carrhotus xanthogramma