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RECOMMENDED BUFFER ZONES AND SEASONAL RESTRICTIONS <br />BALD EAGLE <br />Nest Site: <br />No surface occupancy (beyond that which historically occurred in the area; see `Definitions' below) <br />within'/4 mile radius of active nests (see `Definitions' below). Seasonal restriction to human <br />encroachment (see `Definitions' below) within 1/2 mile radius of active nests from October 15 through <br />July 31. This closure is more extensive than the National Bald Eagle Management Guidelines (USFWS <br />2007) due to the generally open habitat used by Colorado's nesting bald eagles. <br />Winter Night Roost: <br />No human encroachment from November 15 through March 15 within '/4 mile radius of an active <br />winter night roost (see `Definitions' below) if there is no direct line of sight between the roost and the <br />encroachment activities. No human encroachment from November 15 through March 15 within 1/2 <br />mile radius of an active winter night roost if there is a direct line of sight between the roost and the <br />encroachment activities. If periodic visits (such as oil well maintenance work) are required within the <br />buffer zone after development, activity should be restricted to the period between 1000 and 1400 hours <br />from November 15 to March 15. <br />Hunting Perch: <br />Diurnal hunting perches (see `Definitions' below) associated with important foraging areas should also <br />be protected from human encroachment. Preferred perches may be at varying distances from human <br />encroachment and buffer areas will vary. Consult the Colorado Division of Wildlife for <br />recommendations for specific hunting perches. <br />GOLDEN EAGLE <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 1/2 mile radius of active nests from <br />December 15 through July 15. <br />OSPREY <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 August 31. Some osprey populations have habituated and are tolerant to human <br />activity in the immediate vicinity of their nests. <br />FERRUGINOUS HAWK <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 1/2 mile radius of active nests from <br />February 1 through July 15. This species is especially prone to nest abandonment during incubation if <br />disturbed. <br />RED-TAILED HAWK <br />Nest Site: <br />No surface occupancy (beyond that which historically occurred in the area) within 1/3 mile radius of <br />active nests. Seasonal restriction to human encroachment within 1/3 mile radius of active nests from <br />February 15 through July 15. Some members of this species have adapted to urbanization and may <br />