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tolerate human habitation to within 200 yards of their nest. Development that encroaches on rural sites <br />is likely to cause abandonment. <br />SWAINSON'S HAWK <br />Nest Site: <br />No surface occupancy (beyond that which historically occurred in the area) within '/4 mile radius of <br />active nests. Seasonal restriction to human encroachment within '/4 mile radius of active nests from <br />April 1 through July 15. Some members of this species have adapted to urbanization and may tolerate <br />human habitation to within 100 yards of their nest. <br />PEREGRINE FALCON <br />Nest Site: <br />No surface occupancy (beyond that which historically occurred in the area) within'/2 mile radius of <br />active nests. Seasonal restriction to human encroachment within'/2 mile of the nest cliff(s) from March <br />15 to July 31. Due to propensity to relocate nest sites, sometimes up to '/2 mile along cliff faces, it is <br />more appropriate to designate Nesting Areas' that encompass the cliff system and a'/2 mile buffer <br />around the cliff complex. <br />PRAIRIE FALCON <br />Nest Site: <br />No surface occupancy (beyond that which historically occurred in the area) within '/z mile radius of <br />active nests. Seasonal restriction to human encroachment within '/z mile radius of active nests from <br />March 15 through July 15. <br />NORTHERN GOSHAWK <br />No surface occupancy (beyond that which historically occurred in the area) within'/z mile radius of <br />active nests. Seasonal restriction to human encroachment within ''/z mile radius of active nests from <br />March 1 through September 15. <br />BURROWING OWL <br />Nest Site: <br />No human encroachment within 150 feet of the nest site from March 15 through October 31. Although <br />Burrowing Owls may not be actively nesting during this entire period, they may be present at burrows <br />up to a month before egg laying and several months after young have fledged. Therefore it is <br />recommended that efforts to eradicate prairie dogs or destroy abandoned towns not occur between <br />March 15 and October 31 when owls may be present. Because nesting Burrowing Owls may not be <br />easily visible, it is recommended that targeted surveys be implemented to determine if burrows are <br />occupied. More detailed recommendations are available in a document entitled "Recommended <br />Survey Protocol and Actions to Protect Nesting Burrowing Owls" which is available from the <br />Colorado Division of Wildlife <br />