A female bald eagle, known as Liberty, laid her first egg of the year in a 110-foot tall tree on the grounds of the D.C. police training academy in Southwest Washington.

She and her partner, a male named Justice, have been nesting there since 2004.

An up-close view of the first bald eagle egg that was laid this year at a nest on the grounds of the D.C. police training academy in Southwest Washington. (Earth Conservation Corps)

The egg was laid around 6:30 p.m. on Wednesday, according to eagle experts who monitor the nest via a video stream. The egg is expected to hatch between March 15 and March 20. It will be named ECC3, according to eagle watchers.

The eagle cam can be watched at eaglecam.org.

“We are anxiously awaiting to see if Liberty will lay a second and, potentially, a third egg,” said Tommy Lawrence with the Earth Conservation Corps, which monitors the nest and eagles, in a statement.

He said the parents are both healthy and that Justice has given Liberty a “rest from sitting on the egg” at times. Over the next 35 days, experts said, they expect the pair will “switch on and off duties of incubating the egg, occasionally rotating it so that it keeps the same temperature throughout.”

One of the eagle parents keeps watch on the newly laid egg. The eaglet should hatch in mid-March, experts said. (Earth Conservation Corps)

Be assured, experts said, the pair will not leave the egg alone for an “extended period of time, no more than 30 minutes.”

The couple has had one to two eggs every year. Last year, Liberty laid two eggs, but one didn’t hatch. The egg that hatched in mid-March was named Spirit, chosen from 4,000 entries in an online naming contest, officials said.

Another view of one of the eagle parents keeping the egg warm. (Earth Conservation Corps)