1. 5 Mandarin duck displayed and copulated.

2. Copulate (third-person singular simple present Copulates, present participle copulating, simple past and past participle copulated) (somewhat formal) To engage in sexual intercourse

3. Inflections of 'Copulate' (v): (⇒ conjugate) Copulates v 3rd person singular copulating v pres p verb, present participle: -ing verb used descriptively or to form progressive verb--for example, "a singing bird," "It is singing." Copulated v past verb, past simple: Past tense--for example, "He saw the man." "She laughed." Copulated v past p verb, past participle: Verb form used descriptively