opsm_raptorsBe aware that there are sensitive raptor nesting locations in the Boulder area.

These are typically closed February 1 through July 31.

Details at the Boulder Parks & Open Space web site or view the map of Raptor Closures.

Gretchen Bolivar, the Lead Ranger of the City of Boulder’s Open Space and Mountain Parks, would like us to spread the following words:

Greetings and Happy Spring!  And, did you know it is also Raptor Season?!  That’s right.  Every year, raptors return to their territories to mate, lay eggs, incubate and raise their nestlings. 

This is a critical time for the raptors and their fledglings, as any disturbance can cause stress, delay feedings and even cause nest abandonment which can expose the eggs and lead to nest failure.  You can help us protect these amazing raptors and their young, but giving a little bit of extra space.  The city of Boulder’s Open Space and Mountain Parks Rangers and Wildlife staff ask that from February-July, pilots avoid the airspace above our closure areas.  Please see the attached map for those specific areas.  We ask for at least 500’ of distance from these rock formations and ground areas, but any additional space you can give is appreciated!  We do have monitors in the area that document disturbance to our raptors  from aircraft, including gliders that get too close, sight-seeing helicopters that “buzz” the Flatirons (just west of Boulder) and general small aircraft that fly too low over our properties.  What makes the flatirons so special to sightseers, also make it exceptional breeding habitat for our cliff-nesting Raptors like Golden Eagles, Peregrine Falcons and Prairie Falcons.  We also protect plains-nesting species including Bald Eagles, Norther Harriers, Osprey and Burrowing Owls.  Last year we had a great year and we are excited that our eagles are starting to lay eggs and incubate now, and the falcons are returning to their territories already.  We appreciate any additional space you can give during this critical time.  If you have any questions or want more info, please reach out! 

Gretchen Bolivar

Lead Ranger