Bald eagles are back in the Cuyahoga Valley National Park.The park reported that two adult birds were spotted Monday engaged in nesting activities in the Pinery Narrows area north of state Route 82 between Summit and Cuyahoga counties, and the immediate area around the nest is again off limits to park visitors.The nest sits in a small wetland on the Brecksville side of the Cuyahoga River in Cleveland Metroparks’ Brecksville Reservation.The eagle-nesting zone includes the Cuyahoga Valley Scenic Railroad tracks on the west of the Cuyahoga River from the state Route 82 bridge north to Fitzwater Road, plus a 30-foot right of way on both sides of the tracks. That area is closed to all pedestrian traffic.The Cuyahoga River from the Brecksville dam north to the Fitzwater Bridge is closed to all water activities: boating, fishing and wading, under the park’s edict.The Ohio & Erie Canal Towpath Trail on the east side of the Cuyahoga River is open.The closures are necessary to minimize disturbing the nesting eagles, the park said.In late winter, eagles typically lay one to three eggs that are incubated for about 35 days. Eagle eggs are extremely sensitive to cold temperatures so adults must remain on the eggs constantly. Human disturbance can disrupt this constant care and jeopardize nesting success.The restrictions will remain in place until July 31 when any young eagles hatched would be leaving the nest.The bald eagles returned to the Cuyahoga Valley in 2006 after an absence of 70 years.It is one of a growing number of eagle nests at inland lakes and wetlands in Northeast Ohio.That includes wetlands in Aurora, at Wingfoot Lake State Park in Suffield Township, near Lake Rockwell, at the Ravenna Army Ammunition Plant, near Lake Milton in southeast Portage County, along Breakneck Creek in southwest Portage County, at Walborn reservoir in northern Stark County, at Chippewa Lake in Medina County and in the Killbuck Marsh in southern Wayne County.The bald eagle was on the federal endangered species list because of declining numbers from 1973 to 2007. It is still protected under two federal laws.Bob Downing can be reached at 330-996-3745 or bdowning@thebeaconjournal.com.