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Last year, severe cold impeded the hatching of another trio of eggs.

Last year, severe cold weather prevented another trio of eggs from hatching.

On Thursday, a pip — or the first sign of hatching — was seen in the third egg in the avian couple’s clutch.

Bald eagle eggs typically have a 50-50 chance of hatching, according to Sandy Steers, biologist and executive director of Friends of Big Bear Valley.

The measures ranged from hatching Chinook salmon to the eradication of invasive algae, and the study's authors said their findings offered a "ray of light" for those working to protect threatened animals and plants.