Spring has sprung at the Los Angeles Zoo, where recent births of a koala, twin peninsular pronghorns and a desert bighorn sheep have heralded a baby boom.

First came the baby koala, known as a joey. The female koala was born in July, but since newborn koalas spend about six months developing in the mother's pouch, the new joey has just recently started to emerge, zoo officials said in a statement.

Next came male and female pronghorn twins, born March 1, and 19 days later, a female bighorn sheep.

“We’re always excited to showcase babies,” said Jason Jacobs, director of public relations for the Los Angeles Zoo. “Not only does the public enjoy seeing them, it’s a testament to the great programs that the zoo is involved in. Hopefully, this is the first of many births coming this year.”

Koalas, which are native to Australia and belong to the marsupial family, are typically just three-fourths of an inch long when born, zoo officials said. They spend their first year in their mother’s pouch, being “weaned from milk to eucalyptus as they stick their heads out of the pouch to eat partially digested leaves,” zoo officials said.