The average clutch size is two, while four is considered rare. The Decorah nest is 5-6 feet across, about the same depth and weighs about 1½ tons. The nest must be large and sturdy enough to hold the eaglets as they grow, and to handle the commotion as they learn to fly. During incubation, one of the parents is almost always on the nest.
The pair of eagles typically lay eggs in February, and the first eaglets usually hatch in late-March or early-April.
In 2013, the eagles constructed an alternate nest, and there was no opportunity for the Raptor Resource Project to install live cams.
However, the Center did install cams in this second, alternate nest (known as N2) last October.
The record nest measured over 9 feet wide and 20 feet deep, and was estimated to weigh more than 4,000 pounds.
Although they spend winters and migrations alone, bald eagles maintain the same breeding pair year after year. The Decorah eagle pair has been together since the winter of 2007-08.
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