Via National Zoo

Hooray!!!! Another Butterstick has arrived: The National Zoo Tweeted, “Panda cub born at 5:34pm live on panda cam.”

On Thursday, the zoo announced that Mei Xiang was indeed pregnant, but estimated the baby could arrive early next week or in early September. But then Mei Xiang put them on alert just after 2 p.m.:

The National Zoo promises video and photos are coming. Brian Fantana has more:

Update: Here’s video of Mei Xiang giving birth:

The zoo says that the baby panda is “vocalizing” and there’s important bonding going between Mei Xiang and the cub. The zoo is taking a “hands-off approach” at this point and will only intervene if they are concerned.

About an hour elapsed between Mei Xiang’s water breaking and the birth; it was two hours between the water breaking and Bao Bao being born.

And no, they don’t know who the father is—Mei Xiang was artificially inseminated with sperm from Hui Hui, a panda in China, Tian Tian of the National Zoo—bit’ll be a while before the zoo can take blood.

The baby is tucked under Mei Xiang’s arm, so it’s hard to zoo staff to see whether it’s nursing.

The National Zoo warns that since everyone is on the Panda Cam, you may be timed out—but if you download their app, you can watch “to your heart’s content.”