Biological Exuberance: Animal Homosexuality and Natural Diversity

mammals: primates hoofed other

birds: waterfowl shore perching other

see also Lek mating system; Polygamy

Protocultural behavior see Cultural behavior

Pseudomale, pseudofemale behaviors see Explanations—pseudoheterosexuality; Transvestism—contrasted with homosexuality

Quartets see Parenting; Sources of offspring; Trios, quartets

Rape see Nonconsensual sexual activity

Reciprocal mounting (heterosexual) see Reverse mounting

Reciprocal mounting (homosexual)

mammals: primates marine hoofed other

birds: waterfowl shore other

Refusal of heterosexual copulations see Nonconsensual sexual activity; Partner refusal, indifference; Preference (homosexual) —ignoring opposite-sex partners

Reproductive suppression, delay (heterosexual)

mammals: primates marine hoofed other

birds: waterfowl shore perching other

see also Nonbreeders

Reverse mounting (heterosexual)

mammals: primates marine hoofed other

birds: waterfowl shore perching other

Rich, Adrienne

Ritualized and/or greetings interactions (homosexual ) mammals birds

Robertson, Doyle

Rollinat, R.

Rump-rubbing see Anal stimulation

Saunders, Peter

Savage-Rumbaugh, Susan

Schevill, W. E.

Schlesier, Karl

Selous, Edward

Sequential hermaphroditism see Transsexuality

Sex-change see Transsexuality

Sexism in biology

Sex ratios, skewed see Explanations—shortage of opposite sex

Sex segregation

migratory mammals birds

social/spatial primates marine mammals hoofed mammals other mammals perching birds other birds

temporal/seasonal mammals birds

see also Delayed implantation; Sexual cycles, male; Sperm storage

Sexual arousal—erection, thrusting, etc. (homosexual)

primates: apes langurs, etc. macaques other

marine mammals

hoofed mammals

other mammals

birds

see also Orgasm; Penetration

Sexual behaviors (homosexual) see Anal stimulation; Genital rubbing; Differences between homosexual and heterosexual behaviors; Duration of homosexual interactions; Manual stimulation; Mounting; Oral stimulation; Orgasm; Penetration; Ritualized and/or greetings interactions; Sexual arousal

Sexual cycles, male primates marine mammals hoofed mammals other mammals birds