Nest fixing with the kidney secretion of a male three-spined stickleback Gasterosteus aculeatus

Nesting of three-spined stickleback Gasterosteus aculeatus - Fixing nest material with the secretion from its kidney

Egg care of male three-spined stickleback Gasterosteus aculeatus

Territorial defense of male three-spined stickleback Gasterosteus aculeatus

Male three-spined stickleback Gasterosteus aculeatus under fanning turned out a female

Nesting of three-spined stickleback Gasterosteus aculeatus - Nest forming with its mouth

a male three-spined stickleback Gasterosteus aculeatus with nuptial coloration

Interruption of courtship behavior of male three-spined stickleback Gasterosteus aculeatus

A male three-spined stickleback Gasterosteus aculeatus refused the courtship from a female

Fanning behavior and repair of nest in three-spined stickleback Gasterosteus aculeatus

Nesting of three-spined stickleback Gasterosteus aculeatus - Tunneling

Egg-predation defense by the deception of a male three-spined stickleback Gasterosteus aculeatus

Courtship behavior of female three-spined stickleback Gasterosteus aculeatus (2)

'Zigzag dance' and nest-introducing behavior of three-spined stickleback Gasterosteus aculeatus (2)

'Zigzag dance' and nest-introducing behavior of three-spined stickleback Gasterosteus aculeatus (1)

Threat behavior of three-spined stickleback Gasterosteus aculeatus

Courtship behavior of female three-spined stickleback Gasterosteus aculeatus

Courtship and navigation behavior of three-spined stickleback Gasterosteus aculeatus

'Zigzag dance' courtship behavior of three-spined stickleback Gasterosteus aculeatus

Tinbergen's Experiment - Key stimulus releasing fighting behavior of three-spined stickleback Gasterosteus aculeatus

Male three-spined stickleback chasing a female out of the territory

Fighting behavior of three-spined stickleback Gasterosteus aculeatus released by its reflected image in a mirror

Fanning behavior of three-spined stickleback Gasterosteus aculeatus and its interruption by the wandering of a non-indigenous red swamp crayfish

Video 7. A mother Japanese badger (Meles anakuma) collecting fallen leaves as nesting materials and carrying them to the entrance of the sett before a male offspring carried them into the sett

Video1. A male offspring (delayed disperser) of the Japanese badger, Meles anakuma, digging the sett and scraping soil out