(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.
It depends on the squirrel species you are talking about. For a flying squirrel, their mating season is from January to August, and gestation period lasts forty days. So, this â¦ type of squirrel could be born anywhere from midwinter to early fall. A grey squirrel, on the other hand, has mating season in winter.o, their babies would most likely be born in spring or summer, considering that their gestation period for each mating season is about forty four days. The red squirrel will give birth to babies anywhere from January to March for their first litter, and April to July for their second.