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Sexual selection in birds concerns how birds have evolved a variety of mating behaviors, with the peacock tail being perhaps the most famous example of sexual selection and the Fisherian runaway. Commonly occurring sexual dimorphisms such as size and color differences are energetically costly attributes that signal competitive breeding ...
Paraphilias are sexual interests in objects, situations, or individuals that are atypical. The American Psychiatric Association, in its Diagnostic and Statistical Manual, Fifth Edition (DSM), draws a distinction between paraphilias (which it describes as atypical sexual interests) and paraphilic disorders (which additionally require the experience of distress, impairment in functioning, and/or ...
Homosexual behaviour is demonstrated by 120 known species of birds. [40] While an uptick in research on bird homosexuality – and animal homosexuality in general – has been coming out in recent years, it is common for some authors to labour in articulating the view any root cause or function of bird homosexuality is poorly understood. [41]
For these birds, there is documented evidence of homosexual behavior in one or more of the following kinds: sex, courtship, affection, pair bonding, or parenting, as noted in researcher and author Bruce Bagemihl's 1999 book Biological Exuberance: Animal Homosexuality and Natural Diversity.
Male peacock spider, Maratus volans, courtship display In some species, males will perform ritualized movements to attract females. The male six-plumed bird-of-paradise (Parotia lawesii) exemplifies male courtship display with its ritualized "ballerina dance" and unique occipital and breast feathers that serve to stimulate the female visual system. [7]
Sexual attraction to humans can develop in non-human mammals or birds as a result of sexual imprinting when reared from young by humans. One example is London Zoo female giant panda Chi Chi . When taken to Moscow Zoo for mating with the male giant panda An An, she refused his attempts to mate with her, but made a full sexual self-presentation ...
Some gynosexual people are attracted to feminine people of all genders, while others are attracted just to feminine people of one gender, says Justin Lehmiller, Ph.D., a member of the Men's Health ...
The correct usage of the term homosexual is that an animal exhibits homosexual behavior or even same-sex sexual behavior; however, this article conforms to the usage by modern research, [17] applying the term homosexuality to all sexual behavior (copulation, genital stimulation, mating games and sexual display behavior) between animals of the ...