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mating |
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| It is possible for ovigerous females to mate, and courtship prior to copulation does not take place, nor does pre or postcopulatory mate guarding (Gonzalez-Gurriaran et al. African birds called tropical boubous (Laniarius aethiopicus) also show signs of mate guarding, but with a twist, Ulmar Grafe and Johannes Bitz of the University of Wurzburg in Germany reported in 2004. It also coincides with an increase in females' extra-pair copulation frequency (Baker & Bellis, 1995) and an increase in mate guarding by a primary partner (Gangestad, Thornhill, & Garver, 2002), findings which suggest a sperm competition theory of double-mating behaviors. |
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