A male baikal teal displaying head-pumping in front of a female

A male baikal teal following a female with calling

Encountering when a male visited the territory of a female

female presenting to male

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

Courtship display of male Northern Pintails, and submerging of a female for escape

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

Courtship behavior of male red-eared sliders and female rejection response

A male fiddler crab captured a female and took her into his burrow

Struggle to dislodge in a heterospecific mating pair consisting of a female Drosophila santomea and male a D. yakuba

Mating behavior of the white-spotted longicorn beete, Anoplophora malasiaca.-1. Male mating trial to a glass-rod treated with female pheromonal extract

A male Red Ring Skirt (Hestina assimilis) tried unsuccessfully to mate with a female feeding on tree sap

Egg-laying of a male-colored female common skimmer

Unhappy interaction between male and female fiddler crab: vol.2

Unhappy interaction between male and female fiddler crab: vol.1

Male-male sexual behavior in Cobitis magnostriata

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

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

Male cricket's behaviour like a female

Major cheliped use in intruder male during male-male contest of hermit crab

Competition for mate in male striped eel catfish

Chasing and sneaking behavior of male Japanese bitterling

Mating behavior of the white-spotted longicorn beetle, Anoplophora malasiaca.2 Male mate orientation regulated by olfactory and visual cues

Eversion of the internal sac membrane observed in a leaf beetle

A pair of Baikal teal, swimming, walking across a promenade, climbing a slope, and eating acorns in an oak forest