BISMARCK, N.D. (AP) — The state Game and Fish Department is looking for help in identifying bald eagle nests in North Dakota.

Conservation biologist Sandra Johnson says the agency is looking for locations of nests with eagles present. She says it’s easy to distinguish an eagle nest because of its enormous size, and eagles are actively tending to eggs or their young in April.

READ MORE: Victoria Neighborhood Voices Concerns Over Level 3 Offender Matthew Vanhecke Moving In

Eagle nests historically have been found along the Missouri River. But in recent years they’ve been observed in more than three-quarters of the state’s counties, near streams and lakes and in rural shelterbelts.

READ MORE: Fourth Stimulus Check: Is Another Relief Payment Coming?

Johnson estimates North Dakota has at least 170 active bald eagle nests.

Nest observations should be reported to Game and Fish at 701-328-6300, or by email at Observers are asked to not disturb nests.

MORE NEWS: Iron Range Board Approves Funding For Huber Engineering Woods Mill In Cohasset

(© Copyright 2016 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)