(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.
If your pet parakeet has laid eggs, then you will be very excited. You will want to know how long does it take for parakeet eggs to hatch. The good news is that the hatching process is not long. If the eggs are fertile and the female parakeet starts sitting on them, the eggs should hatch in around 18 days. In order for parakeet eggs to hatch, the female parakeet has to sit on them constantly.