| Male Gryllus bimaculatus guard females to delay them from mating with rival males and to obtain repeated copulations. |
| In colonially nesting Razorbills, a seabird traditionally viewed as monogamous with biparental care, both sexes attend mating arenas to obtain extrapair copulations. |
| Much research has focused on understanding breeding synchrony in animals and its relationship to such issues as mating systems and extrapair copulations in birds. |
| Female zebra finches, Taenopygia guttata, actively solicited and performed extra-pair copulations with more attractive males having higher song rates. |
| Male mosquitofish do not court and copulations result exclusively from males forcibly inseminating females. |
| Continuous recording was made of all relevant behavioral events such as fights between males, copulations, and ovipositions. |
