(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.
Mating occurs in the Australian spring and summer months of September to March. However, captive indoor dragons do not seem to be seasonal and can breed year round (Grenard 1999). Females dig a burrow and lay up to 24 eggs per clutch, and up to 9 clutches per year.