Sample of sex chats

If a species is said to be not sexually dimorphic, this means that the male and female of the species look identical and can not be told apart through their physical appearance.

Some bird species also exhibit a degree of sexual dimorphism with regard to their behavioral characteristics.

Bird sexing image 1: Black Swans tend to form pairs that mate for life.

In a breeding pair, the male swan will normally be the bigger animal of the two. The male swan is most likely the bird on the left in this pair (the larger bird with the significantly longer neck) and the bird on the right is most likely a female.

The male swan will also generally have a disproportionately longer neck than that of the female swan. Bird sexing image 2: Maned ducks (wood ducks or maned geese) tend to form pairs that look after the chicks together.

In this breeding pair, the male wood duck is the larger of the two birds (the adult on the left) with the larger, more obvious mane (ridge of dark brown feathers running down the back of the head).

having some knowledge of the sexual characteristics of the bird species before starting the examination).

It also helps to have several birds in front of you - it is easier to compare the sexes directly if they are in close proximity.

Sometimes the male and female birds of a species are similar in overall size, but show distinct differences in the size, development and/or length of a particular body structural feature.

The "how to sex birds" information provided on this page is supported by a number of helpful pictures and links to useful bird sexing sites that may help you to distinguish the boys from the girls. Some basic tips when handling and sexing birds for the first time.2.

Sexing birds by their appearance and behaviour - sexual dimorphism between male and female birds of the same species:2a) Overall body-size differences between male and female birds.2b) Specific structural size differences between male and female birds.2c) Colour differences between male and female birds.2d) Only female birds lay eggs.2e) Behavioural differences between male and female birds.2f) Vent-sexing in avian species that have a phallus (penis) - Anseriformes (ducks, geese, swans, screamers), Galliformes (mallee fowls, quails, pheasants, turkeys, peafowls) and ratites (emus, cassowaries, ostriches, rheas, kiwis).3. Bird sexing services your vet can provide:4a) DNA bird sexing (avian DNA sexing): bird DNA feather sexing, blood DNA sexing and eggshell DNA sexing.4b) Endoscopic bird sexing - what it is and the advantages and disadvantages. Good links (includes links to genetics company sites that provide DNA sexing).

Examples of bird species where the male and female birds differ in beak length or shape: Sexing swamphens image 3 - The red facial shield of the purple swamphen is present on both male and female birds. Sexing maned ducks image 4- The male maned duck (adult duck on the left) has a ridge of long, black feathers running down the back of its head.

These feathers make the male duck's head look puffy at the back.

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