City of Boulder’s Open Space and Mountain Parks (OSMP) Department will begin seasonal area closures to protect grassland ground-nesting birds beginning Thursday, May 1.

These closures will be in effect until July 31.

No designated trails will be closed as part of this protective measure.

The areas closed for grassland ground-nesting birds are:

Both sides of the Greenbelt Plateau Trail from Community Ditch Trail to the Greenbelt Plateau Trailhead on state Highway 128. Dogs will be allowed on the Greenbelt Plateau only if they are on leash (the trail is normally voice-and-sight control);
The area north of Community Ditch Trail and west of state Highway 93;
The area north of the Flatirons Vista North Trail and west of Highway 93 on top of the mesa;
The area north of the South Boulder Creek West Trail, east of the Bluestem Connector and south of Shanahan Ridge (dogs are prohibited in this area year-round).

Dog regulations on both the Community Ditch and Doudy Draw trails will remain voice-and-sight control.

For a variety of reasons, grassland bird populations in North America have declined sharply in the last several decades. Three species that OSMP monitors – Grasshopper Sparrows, Horned Larks and Lark Sparrows – have suffered at least a 50-percent population decline in the last 40 years, according to the National Audubon Society. The closures OSMP will implement Thursday are important in protecting these species’ habitats by keeping people and their pets away as the birds attempt to nest.

Please help OSMP protect these species and other ground-nesting birds by respecting the closures. Trespass violations can result in a summons with penalties up to 90 days in jail and/or a $1,000 fine.

Source: City of Boulder