Red Kangaroo Gestation Period: How Long Is a Red Kangaroo Pregnant?

How long is a red kangaroo pregnant?

A red kangaroo carries her joey for an average of 33 days, or about 1 month. Counting from the breeding date, birthing is normal anywhere from day 30 to day 36.

Key checkpoints across the 33-day red kangaroo gestation, measured in days from breeding:

Estimate your red kangaroo's birthing date

Enter the breeding date for an estimated birthing date at 33 days.

Red kangaroo gestation stages, month by month

Signs a red kangaroo is pregnant

• There is no visible sign of pregnancy, because the embryo is tiny
• In managed care, the main sign is a newborn joey appearing in the pouch
• A joey leaving the pouch for good often signals that a paused embryo will restart
• Pouch inspection shows a joey attached to a teat soon after birth

Signs of approaching birthing

• The female licking and cleaning her pouch shortly before birth
• The female sitting with her tail forward between her legs as birth begins
• Contact your vet if labour stalls, if the animal strains without progress, or if there is abnormal discharge before birthing begins.

What affects red kangaroo gestation length

• A red kangaroo is pregnant for only about 33 days. The joey is born at roughly the size of a jellybean, weighing under a gram.
• The newborn crawls unaided through its mother's fur into the pouch, attaches to a teat and stays there for months. Most of its development happens in the pouch, not the womb.
• Kangaroos have embryonic diapause: a female often mates again soon after giving birth, but the new embryo pauses its development while a joey is still in the pouch.
• Development restarts when the older joey is ready to leave the pouch or is lost. This means a female can have an embryo on pause, a joey in the pouch and a young-at-foot joey all at once.
• The joey first leaves the pouch at around six months and stops using it altogether at around eight months.
• In drought, red kangaroos may stop breeding altogether. When conditions improve, paused embryos and fresh matings let them recover quickly.

Red kangaroo gestation chart

Every fifth breeding date across the year with the matching birthing date, calculated at 33 days. Find the row closest to the date the red kangaroo was served; because normal gestation spans 30 to 36 days, plan for a window of a few days either side. Filter by month, or print the chart for the barn wall or breeding record: navigation, buttons and adverts are hidden on paper.

Sources for red kangaroo gestation figures

Figures on this page are drawn from Australian museum and government wildlife information on red kangaroos, zoo marsupial husbandry guidance and published research on embryonic diapause, and checked against the references below. Averages describe healthy animals under normal management; individual animals vary, and nothing here replaces advice from your vet.

• Australian Museum — red kangaroo fact sheet
• Association of Zoos and Aquariums (AZA) — species husbandry and animal care manuals
• Smithsonian's National Zoo & Conservation Biology Institute — species fact sheets
• Published zoological studies of captive births