A few years ago, a British geneticist, a philosopher and a chicken farmer pooled their resources and concluded that the egg came first. The first egg to have the DNA of a chicken would hatch into a chicken, said professor John Brookfield of the University of Nottingham in 2006. Brookfield and Papineau were speaking at the behest of Disney as a promotion for the film Chicken Little.
When a parakeet is about 3 or 4 months old, it molts for the first time. If your bird is younger than that, his head is adorned with stripes all the way from the forehead down the back of his neck.After his first molt, he loses the stripes from his forehead.hen a parakeet is about 3 or 4 months old, it molts for the first time. If your bird is younger than that, his head is adorned with stripes all the way from the forehead down the back of his neck.
1 Birds are easily stressed and can die from fear and heat exhaustion if handled excessively or roughly.  If attempting to sex parakeets by their cere colour (the colour of the nostril band at the top of the beak), wait until they are mature (over 12 months old). The cere colour is not helpful for determining parakeet gender in juvenile birds.