(of an organism or tissue) living in the absence of air or free oxygen. pertaining to or caused by the absence of oxygen.
Parakeets can breed year round if conditions are right in their environment. Normal breeding season begins early in the year and continues until fall. It is very rare to see parakeets mating, but a male and a female must mate to keep the eggs fertile.
Parakeet Chicks. Parakeets are bred and raised in captivity by domestic breeders, since it is illegal to import most wild birds. The typical number of eggs in a parakeet clutch is four to eight. After incubating for 18 to 21 days, the eggs hatch and parakeet chicks emerge from the egg blind, naked and helpless. For the first four weeks the chicks remain in the nest with their mother while their father brings food to the female who feeds them.