* Eurasian Bittern ; in spring, the male's ' booming ' song can be heard.

The male's song, given from trees, rooftops or other elevated perches, is a loud clear run of musical phrases, repeated two to four times, filip filip filip codidio codidio quitquiquit tittit tittit tereret tereret tereret, and interspersed with grating notes and mimicry.

The male's song is high and twittering like a Dunnock.

The male's song, given throughout the year, is a soft twitter of melodious chirps.

The male's song is a scratchy oak-a-lee, accompanied by a display of his red shoulder patches.

The male's song consists of short pleasant warbling strophes, interspersed with fluid whistles.

Later in the evening the male's distinctive song can be heard and is known locally as the ‘ Bootle Organ ’.

The male's song begins with srrih, srrih followed in turn by a few twittering notes, a longer descending ripple, and a whistle that falls and then rises.

The male's song is composed of random chattering phrases and can include mimicry of other species.

The male's distinctive song is useful for identification, as no other member of the genus mimics other birds to any significant extent.

The male's call includes sometimes soft warbles of jeew or chir-wi or the melodious song chiti WEEW wewidoo ( Sibley, 2000 ).

The male's song is a fast twittering given from a bush or in flight.

The male's mating song is a rapid nasal qui-qui-qui-qui-qui-qui-qui.

The male's song is a musical, distinctive series of descending notes followed by a warble.

Each male's song is different, although birds of the same bloodline will exhibit similarities, and all finches will overlay their own uniqueness onto a common rhythmic framework.

The male's song is a loud gurgle used to declare ownership of territory ; western males have a more varied repertoire.

The male's song is a rattling trill.

The male's song is a short high-pitched trill.

The male's song is a clear warble.

The male's song is a series of buzzy notes, with the earlier notes doubled and the next to last note high.

The male's song is a mixture of rasping sounds and svee-svee notes.

Both sexes sing ; the faster rhythm of the male's song is one of the few ways to differentiate the sexes.

The main vocalisation is the male's loud advertisement call which seeks to both encourage a female to approach and discourage other males from intruding on its territory.

Sir John Tenniel's illustration of the Caterpillar ( Alice's Adventures in Wonderland ) | Caterpillar for Lewis Carroll's Alice's Adventures in Wonderland is noted for its ambiguous central figure, whose head can be viewed as being a human male's face with a pointed nose and pointy chin or being the head end of an actual caterpillar, with the first two right " true " legs visible.

Their tough skin is covered with dermal teeth ( again with Holocephali as an exception as the teeth are lost in adults, only kept on the clasping organ seen on the front of the male's head ), also called placoid scales or dermal denticles, making it feel like sandpaper.

Of those seven times, Paul lists Priscilla first in five of those, suggesting that he may have viewed her as the more prominent of the two, but it is clear that he did not follow the tradition of always listing the male's name first for a married couple.

Fellatio ( also known as fellation, and colloquially blow job, BJ, giving head or sucking off ) is an act of oral stimulation of a male's penis by a sexual partner.

* The Indigo Bunting is a small bird native to North America known for the male's brightly colored breeding plumage.

The function of the spermatophylax is to increase the attachment time of the male's spermatophore and thereby increase his paternity.

At about the male's dorsal fin is more than twice the size of the female's and is more of a triangular shape — a tall, elongated isosceles triangle — whereas hers is shorter and more curved.

The skin of the female's neck and thighs is pinkish gray, while the male's is blue-gray, gray or pink dependent on subspecies.

The least successful males have no harems, but may try to copulate with a harem male's females when the dominant male is not looking.

Bright colorations and showy ornamenations, such as those seen in many male birds, in addition to capturing the eyes of females, also attract the attention of predators ; when a male peacock spreads its tail, it is beautiful, but very obvious ( though this may actually be advantageous to the survival of the male's offspring and the breeding population as a whole ; see below ).

Sexual intercourse, also known as copulation or coitus, is commonly defined as the insertion of a male's penis into a female's vagina for the purposes of sexual pleasure or reproduction.

Sexual dimorphism is slight, the male's caudal fin being more pointed.

In winter, the plumage of both sexes is browner than other subspecies, and in summer, the male's black cap is smaller than that of other subspecies.

The sexual dimorphism displayed in plumage coloration is especially pronounced after the spring molt, when the bright color of the male's summer plumage is needed to attract a mate.

A male's rank in the social hierarchy is often determined by his mother's rank.

In contrast, modern genetics has developed a view on sex determination in which no one single factor is responsible for determining sex ; a number of pro-male, anti-male and pro-female genes being responsible, though the largest factor is whether the male's gamete carries an X or Y chromosome.

Following adult union, it is customary for the couple to remain on Vulcan for at least one Vulcan year before conducting off-world travel, though it is possible to defer this requirement until a later date, upon negotiation with the male's family.

The original English name for this bird, dating back to at least 1465, is the ree, perhaps derived from a dialectical term meaning " frenzied "; a later name reeve, which is still used for the female, is of unknown origin, but may be derived from the shire-reeve, a feudal officer, likening the male's flamboyant plumage to the official's robes.