New research shows that variation in mating behaviors, parental care and differences in ornamentation of the sexes in bird species is driven by demographics rather than vice versa. An international ...

Many believe that most people dislike individuals who have sex with a lot of partners—although one's definition of “a lot” is highly subjective. In study after study, promiscuous people are seen as ...

Finally, I wanted to discuss a theoretical contradiction I find myself struggling to reconcile. Specifically, in the beginning of the paper, the authors mention that females will sometimes engage in ...

https://brill.com/view/journals/beh/153/4/article-p443_4.xml,https://brill.com/downloadpdf/journals/beh/153/4/article-p443_4.pdf,https://brill.com/view/journals/beh ...