The females depart and territories may change hands and more females appear and in due course, the breeding season comes to an end.

Frogs are much more vocal, especially during the breeding season when they use their voices to attract mates.

Young aardwolves generally achieve sexual maturity after two years The breeding season varies depending on their location, but normally takes place during the autumn or spring.

During the breeding season, unpaired male aardwolves will search their own territory, as well as others ', for a female to mate with.

However, they will often use the same den as their mother until the next breeding season.

Foxes tend to form monogamous pairs in the breeding season.

The vast majority of bird species are socially monogamous, usually for one breeding season at a time, sometimes for years, but rarely for life.

The Blue Crane is partially social, less so during the breeding season.

The young continue to be tended to until the next breeding season, at which time they are chased off by their parents.

During the breeding season, the male call of this marsh-dwelling bird is a " low pitched boom "; hence, it is occasionally called the " bunyip bird ".

In tropical regions, such as their native habitats, breeding occurs throughout the year, but in subtropical areas, breeding occurs only during warmer periods that coincide with the onset of the wet season.

Coyotes will sometimes mate with domestic dogs, usually in areas such as Texas and Oklahoma, where the coyotes are plentiful and the breeding season is extended because of the warm weather.

This alcid typically fed in shoaling waters which were shallower than those frequented by other alcids, although after the breeding season they had been sighted up to from land.

During the breeding season, it is common for females to have several mates.

Similar to the narrow breeding season, most calves are born within a six-week time period in mid January.

Mares may however have multiple FSH waves during a single estrous cycle, and diestrus follicles resulting from a diestrus FSH wave are not uncommon, particularly in the height of the natural breeding season.

The breeding season is from April to October in the Northern Hemisphere, with two to five litters of one to 13 young being born after a gestation period of 16 to 23 days.

Once a hellbender finds a favorable location, it generally does not stray too far from it — except occasionally for breeding and hunting — and will protect it from other hellbenders both in and out of the breeding season.

The hellbenders ' breeding season begins in late August or early-to mid-September and can continue as late as the end of November, depending on region.

The Common Kestrel starts breeding in spring ( or the start of the dry season in the tropics ), i. e. April / May in temperate Eurasia and some time between August and December in the tropics and southern Africa.

The young become sexually mature the next breeding season.

It is generally a silent, nocturnal animal, but males have a very loud advertising call that can be heard from almost a kilometre away during the breeding season.

Another theory traces the word kipper to the kip, or small beak, that male salmon develop during the breeding season.

In anurans, males usually arrive at the breeding sites before females and the vocal chorus they produce may stimulate the endocrine activity of males that are not yet reproductively active and ovulation in females.

Typically, prolonged breeders congregate at a breeding site, the males usually arriving first, calling and setting up territories.

Other species have polygynous (" many females ") or, rarely, polyandrous (" many males ") breeding systems.

This communal breeding system involves groups of multiple males and females, but only one female is reproductively active.

Sexual dimorphism peaks during weaning when the females lose weight and the males start eating more, and is at its lowest when the females are pregnant, which is also when the males are tired from breeding.

In the field of behavioural ecology polyandry is a type of breeding adaptation in which one female mates with many males.

Or, in the second case, while natural selection can help animals develop ways of killing or escaping from other species, intrasexual selection drives the selection of attributes that allow alpha males to dominate their own breeding partners and rivals .< ref name = hu > Wikipédia-szerkesztők ( Wikipedia contributors ), ' Nemi szelekció ' (' Sexual Selection '), Wikipédia, 2011. május 17.

Finally, sexual conflict is said to occur between breeding partners, sometimes leading to an evolutionary arms race between males and females.

Bachelor males either live alone or with groups of other bachelors until they are old enough to challenge a breeding stallion.

Productive breeding years are between four and 20 years of age in females, and only between six and 12 years of age in males.

Parasitism is part of one explanation for the evolution of secondary sex characteristics seen in breeding males throughout the animal world, such as the plumage of male peacocks and manes of male lions.

According to this theory, female hosts select males for breeding based on such characteristics because they indicate resistance to parasites and other disease.

In addition to the territorial and breeding calls given by males and females during the breeding seasons, trogons have been recorded as having aggression calls given by competing males and alarm calls.

Normally a shy animal, the European brown hare changes its behavior in spring, when hares can be seen in broad daylight chasing one another around meadows ; this appears to be competition between males to attain dominance ( and hence more access to breeding females ).

Some species, such as lechwes, pursue a lek breeding system, where the males gather on a lekking ground and compete for a small territory, while the females appraise males and choose one with which to mate.

Large grazing antelope, such as impala or wildebeest, form large herds made up of many females and a single breeding male, which excludes all other males, often by combat.

Female Superb Lyrebirds start breeding at the age of five or six, and males at the age of six to eight.

Males defend territories from other males, and these territories may contain the breeding territories of up to eight females.