Thousands of fans have kept watch over live webcam footage chronicling April's every move.
"All observations, behavior, and predictions suggest a calf today, tonight", the post said.
The park says they are not announcing active labor at this time, and they made a second post later in the day describing some of April's behavior.
Keeper report - April has zero interest in food.
April's popularity led to a sponsorship from Toys "R" Us, which has long featured the fictional "Geoffrey the Giraffe" as its mascot.
Keep an eye on her in the video above. Male giraffes, called bulls, really only care about two things, the zoo says: "fighting and the unmentionable". April has never lost a calf nor had a stillborn. Her first livestream that was launched in February could have been the 13 month mark, which is why she started to show some signs of labor. Viewers are inundating the Zoo with emails about the giraffe's condition. The Animal Adventure Park says they can not keep the calf because it would lead to incestuous mating and would "undermine the genetics of the program and species".
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Any moment now, April, the beloved, pregnant giraffe that has distracted the Internet for weeks, could give birth.
Giraffe pregnancies last up to 15 months.
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April, age 15, is expecting her fourth calf, and it'll be the first for daddy Oliver, who's 5.
"We can not retain offspring, as it would lead to incestuous mating and undermine the genetics of the program and species", the zoo says.
Once the baby giraffe is expected to be 150 lbs and 6′ tall at birth.