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Audubon Society of Western Pennsylvania Statement on the Remaining Egg in the Hays, PA Bald Eagle Nest


For immediate release, April 2, 2016

There is one unhatched egg remaining in the Hays, PA Bald Eagle nest. The egg has gone one week past the typical 35 day incubation period and at this time, the adult eagles are no longer actively incubating the egg. Audubon believes that the egg is not viable and will not hatch.

While we will never know for certain why this egg did not hatch, it’s possible that it was not fertile from the start. An infertile egg cannot develop into an eaglet and the egg would thus be deemed non-viable. It’s also possible that something went wrong developmentally within the egg after it was laid.

Across the state in Hanover, it appears that their local Bald Eagles also have an egg that is not going to hatch. We do not believe that there is any connection between the non-hatchings in Hanover and Hays—it’s nothing more than a coincidence. Last year, both sides of Pennsylvania had abnormally cold winters, which we believe was one of the factors that led to an unsuccessful breeding season for our Pittsburgh Bald Eagles. But in 2015, the Hanover Bald Eagles raised and fledged young, while facing the same cold temperatures. Before webcams were pointed on these nests, we did not know what was happening inside of them. Today we can see nature at work—both the good and the hard, sometimes uncomfortable reality of it.

The positive news is that the Hays Bald Eagles have two healthy and vibrant eaglets in their nest—eaglets that are approaching two weeks old and growing every day. We look forward to watching their continued growth and development, and eventual fledging from the nest in early summer. The Hays Bald Eagles have successfully hatched six eaglets: one in 2013, three in 2014, and two in 2016. The unhatched egg will eventually be broken through activity in the nest—parents and eaglets moving around. The egg, like the shells of the hatched eaglets, will eventually become invisible within the nest.

Watch Pittsburgh’s eagles at For additional information on the Hays and Harmar Bald Eagles, please visit our Facebook page,, where daily updates on both nests are posted. The Harmar Bald Eagles’ first egg is expected to hatch on or around April 13.