A “pip” is a “visual sign of a hatch in progress,” says the Audubon Society of Western Pennsylvania.

By: KDKA-TV News Staff

PITTSBURGH (KDKA) — A pip in the third egg has appeared three days after the hatchings of the first two Hays eaglets.

READ MORE: Doctors Say Side Effects Are Not Uncommon With Pfizer And Moderna Vaccines

(Photo Courtesy: PixController/Audubon Society of Western Pennsylvania)

Expert eagle watchers spotted the pip on the third egg at 9:46 a.m. on Friday. The egg has been incubating for 35 days.

A “pip” is a “visual sign of a hatch in progress,” says the Audubon Society of Western Pennsylvania. The time from pip to hatching takes about 12-48 hours.

READ MORE: Experts: BB Guns Are Being Mistaken For Real Firearms, Prompting Police Response

The first two eggs hatched on Tuesday more than 16 hours apart.

The Audubon Society says the newly hatched eaglets likely weigh about 3.5 ounces.

The fuzzy babies are covered in soft gray down that will eventually be replaced by thermal down in about 14 days. That means the babies cannot initially maintain their own body temperature.

MORE NEWS: Crews On Scene Of Fire At Body Shop In Butler County

It takes about nine days for eaglets to develop better eyesight.