(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.
Female Parakeets will lay their eggs relatively soon after mating. Like many other types of birds, it's not uncommon for Parakeets to lay one egg every other day until they have all been laid. There are usually between 4 and 8 eggs in each clutch, although this can vary. Incubation Time: On average, Parakeets incubate their eggs for between 17 and 20 days.