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Budgie biology:The life expectancy of a parakeet is quite varied, averaging around 4-9 years, but some can live up to 15 years, and some have a fairly short period.
Sex can be determined by color (around the nostrils). Males usually have dark blue cereals, they are generally easier to train than female parakeets. Females can be identified from Ceres, which are whitish, which usually changes color (sometimes crusty) brown during breeding conditions, they can be harder to train than men because they are usually more dominant and stubborn, they are also more vocal compared to male parakeets
Nursery season can occur at any time of the year, with couples able to have several clutches (each clutch contains 4-8 eggs).
The average size is 18-20cm, weighing around 20-40g. Interestingly, Parakeets raised in captivity are usually slightly larger than those born in the wild
Budgie Anatomi
Anatomi Budgie Jantan
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other interesting information: Australian parakeets have been known to see in the ultra-violet spectrum and their feathers are known to glow under ultraviolet light indicating that their feathering fluorescence is related to courtship and spouse selection.
With the domestication of the budgie there has given birth to a minimum of 32 different basic color mutations, this allows for hundreds of possible secondary mutations and color varieties.