Gaining beyond 25-35 pounds for a single birth just makes it harder to lose after the baby is born.

Support of a single birth and death event per person.

Twins are the usual result, with single and triplet births also common.

A single observed captive birth occurred above ground, in the branches.

Unusual among Vulcans, they came from a single birth.

When females reproduce, they have a single birth of one individual, and the gestation period lasts five months.

So in fact, Hammond must have been growing thousands of dinosaur embryos to get a single live birth.

Rarely twins, a typical single birth comes after a seven month gestation period.

In other words, single births are ruthlessly excluded from angel society.

The 200-day gestation period ends with a single birth in late spring or early summer.