Budgerigar

Budgerigar
Male Budgerigar of normal coloration
Conservation status
Least Concern
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Aves Order: Psittaciformes Family: Psittacidae Subfamily: Psittacinae Tribe: Platycercini Genus: Melopsittacus Gould, 1840 Species: M. undulatus
Binomial name
Melopsittacus undulatus (Shaw, 1805)

Budgerigar is the common name for small parrots belonging to the species Melopsittacus undulatus. Though budgerigars are often called parakeets, especially in American English, they are but one of more than 100 species commonly known as parakeets, a diverse grouping of small, slender parrots scattered over more than a dozen genera in the subfamily Psittacinae of the family Psittacidae. Melopsittacus undulatus is also known as budgie and warbling grass-parakeet, and perquito comun in Spanish, among other common names.

Budgerigars have green, yellow, and blue plumage and are the most popular caged bird worldwide (Grzimek et al. 2004). It is native to Australia where flocks of 10 to 100 birds, and even up to flocks of thousands of birds can be found in a wide variety of open habitats (Gzimek et al. 2004). The budgerigar is considered to have survived in the islands of Australia for over 5 million years (Marshall 2004).

Melopsittacus undulatus is only species in the Melopsittacus genus, and it is placed in the tribe of broad-tailed parrots (Platycercini); these are sometimes considered a subfamily (Platycercinae). In the latter case, the Budgerigar is sometimes isolated in a tribe of its own, the Melopsittacini, although it is probably quite closely related to Pezoporus and Neophema.

Characteristics

Adult females (left above) display beige to brown ceres while adult males (right above) typically have blue ceres or purplish-pink in Albinistic & recessive-pied varieties.

Appearance

Budgerigars are about 18 cm long and weigh 30-40 grams. Wild Budgerigars display a green body colour (abdomen and rumps), while their mantle (back & wing coverts) is black edged in yellow. The forehead and face is yellow in adults, and barred black with yellow in young till they change into their adult plumage at 3-4 months of age. Each cheek has a small dark purple patch (cheek patches) and a series of 3 black spots across each sides of their throats (throat-spots) of which the outermost spots are situated at the base of each cheek-patches. The tail is cobalt (dark-blue); outside tail feathers display central yellow flashes. Their wings have greenish-black flight feathers and black coverts with yellow fringes along with central yellow flashes which only becomes visible in flight &/or when the wings are stretched. Bill olive grey and legs blueish-grey, with zygodactyl toes. Wild budgerigars are noticeably smaller than those in captivity. These parrots have been bred in many other colours in captivity, such as white, blue, and even purple, although they are mostly found in pet stores in blue, green and occasionally white. Budgerigar plumage is known to fluoresce under ultraviolet light, a phenomenon possibly related to courtship and mate selection.

The colour of the cere (the area containing the nostrils) differs between the sexes; royal blue in males, pale-brown to white (non-breeding) or brown (breeding) in females and pink in immatures of both sexes (usually of a more even purplish-pink colour in young males). Young females can often be identified by a subtle chalky whiteness that starts around the cere nostril holes. Males that are either albino, lutino &/or recessive-pied (aka Danishpied aka Harlequin) always retain the immature purplish-pink cere color their entire life.

Colour Mutations

There are presently at least 32 primary mutations in the Budgerigar, enabling hundreds of possible secondary mutations (stable combined primary mutations) & colour varieties (unstable combined mutations). Each of these primary mutations falls into one of four basic groups:

• Albinism : where eumelanin is either partially or completely reduced in all body tissues & structures.

• Dilution : where eumelanin is partially reduced in only feathering.

• Leucism : where eumelanin is completely reduced from total or localized feathering.

• Melanism : where eumelanin is increased in the feathering.

Each of these mutations is inherited via one of the following dominance relationships:

• Autosomal co-cominant
• Autosomal complete dominant
• Autosomal incomplete dominant
• Autosomal recessive
• Autosomal polygenic
• Sex-linked recessive

Because birds have a ZW sex-determination system, sex-linked recessive traits are more common in females than in males, rather than the reverse as is found the more familiar XY determination of humans & other mammals.

Personality

Budgerigars are, very generally speaking, accepting of humans and other birds, but should never be housed with a bird other than another budgerigar. Care should be taken even when placing two budgies together, as they can do serious harm to one another if they do not get along. They are relatively easily tamed.

Bird lovers often comment on the differences in personality in each individual bird. Budgies each have their own unique ideas about how much they like to be handled, which toys are their favorites, and even what music they like or are indifferent to.

Habitat and behaviour

Budgerigars are nomadic birds found in open habitats, primarily in Australian scrubland, open woodland and grassland. The birds are normally found in small flocks, but can form very large flocks under favourable conditions. The species is extremely nomadic and the movement of the flocks is tied to the availability of food and water. Drought can drive flocks into more wooded habitat or coastal areas. They feed on the seeds of spinifex, grass weeds, and sometimes ripening wheat..

Breeding takes place generally between June and September in the North and between August and January in the South but they are opportunistic breeders responding to the rains when grass seeds become most abundant. Populations in some areas have increased as a result of increased water availability at farms. The nest is in a hole in a tree, fence post or even a log laying on the ground; the 4-6 eggs are incubated for 17-19 days, with the young fledging about 30 days after hatching.

Feral birds have been found since the 1940s in the St. Petersburg, Florida area of the United States, but are much less common than they were in the early 1980s. Colder than normal winter temperatures in some years and increased competition from European Starlings are the main reasons for the declining population.

Captivity

Pet budgerigars.

The Budgerigar is one of the two Parrots to be genuinely domesticated as a species along with the Agapornis roseicollis (rose-collared aka peach-faced Lovebird). Believed to be the most common pet Parrot in the world, it has been bred in captivity since the 1850s. Breeders have worked over the decades to produce a wide range of colour and feather mutations, such as yellow, blue, white, violet, olive, albino and lutino (yellow), clearwing and spangled. Feather mutations can produce crests or overly long shaggy feathers known as "feather dusters".

Modern show budgerigars, also called English budgerigars and/or Standard-Type Budgerigars are larger than their wild-type (natural form) counterparts, with puffy head feathers, giving them an exaggerated look. The eyes and beak can be almost totally obscured by feathers. Such birds are reported to be more prone to genetic mutations because of inbreeding. Most Budgerigars in the pet trade are not of the show variety (Standard-Type aka English Budgies) and are similar in size and body conformation to wild Budgerigars and thus aptly called wild-type Budgies.

Budgerigars are intelligent and social animals and enjoy the stimulation of toys and interaction with humans as well as with other Budgerigars. A common behaviour is the chewing of material such as wood, especially for female Budgerigars.

Budgerigars can be taught to speak, whistle tunes, and play with humans. Both males and females sing and can learn to mimic sounds & words. Both singing and mimicry are more pronounced and much more perfected in males. As a whole, females rarely if ever learn to mimic more than a dozen words or so. Males can very easily acquire vocabularies ranging between a few dozen to a hundred words. Generally speaking, it is the pet Budgies and even more so the ones kept as single pets which talk the best and the most.

Although taste in toys varies from bird to bird, some toys which are universal favorites among pet budgies include:

• plastic balls, either light solid or hollow, perhaps with inside bell,
• bells,
• carousels,
• non-toxic chew-toys and fruit-tree branches,
• natural ropes such as hemp or sisal,
• natural (undyed and untreated) wood blocks and pieces,
• wooden sticks, like from lollys or coffee,
• ladders, either plastic or wooden and up to any length,
• mirrors, which are especially liked by solitary birds,
• plain brown cardboard and paper items such as small boxes and paper rolls,
• plastic olympic-ring toys,
• pieces of raffia,
• swings hung from high place or top of cage,
• whole or pieces of brown paper lunch-bags,
• natural (non-metal, undyed and untreated) woven baskets are suggested by many pet guides as the safest way to provide a play gym for small Parrot species.

In captivity, Budgerigars live an average of five to eight years, but are reported to occasionally live to 15 if well cared for. The life span depends on the budgerigar's breed (show Budgerigars typically do not live as long as wild-type (natural sized) budgerigars) and the individual bird's health, which is highly influenced by exercise and diet.

Although wild Budgerigars eat grass seeds almost exclusively, avian veterinarians recommend supplementation with foods such as fresh fruits and vegetables, sprouted seeds, pasta, whole grain bread and other healthy human foods, as well as pellets formulated for small parrots. Adding these foods provides additional nutrients and can prevent obesity and lipomas, as can substituting millet, which is relatively low in fat, for seeds mixes. Budgerigars do not always adapt readily to dietary additions, however. Chocolate and avocado are recognized as potential toxins.

All fruits except avocado are healthy but must always be offered without any included seeds.

All vegetables are healthy but both onions and potatoes must not be offered uncooked.

Legumes (aka Pulses) such as beans, lentils, and peas are usually preferred in their well-cooked or sprouted states (except for only lima & navy Beans which are toxic) but can offered in their dried state as well.

Commercial or well-rinsed wild non-toxic edible blossoms, flowers and greens (i.e. daisies, dandelion's leaves and flowers, fruit-tree blossoms, herb blossoms, hibiscus, nasturtiums, pansies, passiflorae, roses, sunflowers, tulips and more) are also very healthy.

Cooked cereals such as barley, oatmeal, quinoa, whole-grain pastas, whole-grain waffles, whole or wild rices are all very healthy.

Sprouted seeds (one can sprout typical Budgerigar seed mix which will sprout whenever the seeds are fresh) are also healthy & highly nutritious.

Reproduction

The male will stand on female's back while some beak contact is made between the mates. The male will then wrap his tail under the female's raised tail, place his cloaca (male budgerigars have no penis) against hers and rub it back and forth to stimulate ejaculation. The male may move away for a moment before returning for another session.

Breeding

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Budgerigars are easily bred. In the wild, they require a hollow tree or a hollow log, but domesticated birds use breeding boxes. A hen will lay her eggs on alternate days; after the first one, there is usually a two-day gap until the next. She will usually lay between four to twelve eggs, which she will incubate for 17 to 20 days.

When the eggs start to hatch, the hatchlings are usually very helpless. During the second or third week, the hatchlings' eyes will open, and they will start to develop feather down which typically indicates best-time for close-banding the chicks. After three weeks, the hatchlings will develop feathers of their genetic colour.

By the fifth week, the hatchlings are strong enough that the parents will be comfortable in occasionally leaving the box. The hatchlings will stretch their wings to gain strength before they attempt to fly. They will also help defend the box from enemies. After the eighth week, the eldest babies should be eating and flying independently.

Breeding difficulties

Breeding difficulties arise for various reasons. Some chicks may die from diseases or attacks by their parents. Other budgerigars may fight over the nest box, attacking the hen while she is laying her eggs. Other difficulties can involve inbreeding and minor colour or feather mutations.

Human speech

A budgerigar named Puck holds the world record for the largest vocabulary of any bird, at 1,728 words. Puck, owned by American Camille Jordan, died in 1994, with the record first appearing in the 1995 edition of Guinness World Records.

The budgerigar will typically speak words in the context to which he or she is accustomed to hearing them. For example, if the bird owner says "up" every time the bird is picked up, the bird may say "up" when it is picked up, or wants to be picked up.

Many budgerigars prefer non-verbal communication, such as stomping on their food dish and shrieking when they want fresh seed, rather than asking for it.

Gallery

• 

  Budgerigar hen of natural colouration

• 

  SF Violet Blue cock Budgerigar

• 

  Budgerigar hen

• ==Etymology==
• At least three possible origins for the English name ''Budgerigar'' have been proposed:
• 

  Suffused Blue (White) Budgerigar

• 

  Young female Opaline-Cinnamon Olive Budgerigar

• 

  Budgerigar chick at eleven days of age

• 

  Male YellowFaced type I Cobalt Australian (Banded) Pied Budgerigar

• 

  Young Male Light-Green Continental_Dutchpied FullBodyColoured-Greywings

• 

  A young sky-blue Budgerigar with a few remaining pin feathers

• 

  Pet Continental_Ducthpied Yellowface type I Cobalt Budgie, wet from the rain and visible pin feathers

See also

Budgerigar colour genetics

References

ISBN links support NWE through referral fees

ref>Dr. Marshall's Philosophy on Breeding Exhibition Budgerigars. Bird Health (2004). Retrieved 2007-01-19.</ref>

External links

• A True Ambassador: the Budgerigar Referenced article on budgerigars
• List of Plants & Branches Hazardous to Birds Referenced list oriented toward pet birds
• Common Budgie Mutations Illustrated list of common budgerigar mutations

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