Females often seem to prefer mating with faeders to copulation with normal males, and normal males also copulate with faeders (and vice versa) relatively more often than with females.
Males in many species discharge urine on females as a preliminary to copulation.
In non-chosen pairs, 16percentt of courtships led to copulation, which was only slightly lower than the rate of 20percentt in chosen pairs.
In addition, females (does) exhibit induced ovulation, their ovaries releasing eggs in response to copulation rather than according to a regular cycle.
Prior to copulation of certain land snails, a dart composed of calcium carbonate is propelled forcefully from the gonopore of each of the mating individuals and lodges in the viscera of the mate.
An aphrodisiac spray of blood leads to copulation in an alley, and hey presto, Eve is the result, with only the unfortunate after-effect that, magic-realist style, her mother's experience became imprinted on the foetus, producing a child entirely covered with hair.
Consequently, I held the belief, not uncommon among adolescent males, that beyond the constraining circles of family, friends, and prudish high-school girlfriends there lay a vast, wild territory of pure sex, where the merest physical or eye contact led to copulation unbounded.
Males of each species have three distinct sound responses: a congregational song that is regulated by daily weather fluctuations and by songs produced by other males; a courtship song, usually produced prior to copulation; and a disturbance squawk produced by individuals captured, held, or disturbed into flight.
Males may attend, guard, or carry the female for some time (preamplexus) prior to copulation (amplexus), and mating may be prolonged for several hours; the male usually continues to feed, molt, and mate further (in isopods, creeping decapods, and benthic amphipods).
