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- Drive your assigned route five times between 15 October and 15 March on calm (constant wind velocity less than 25 km/hr) mornings or afternoons.
- Drive at a constant rate of 40 km/hr (25 mph), stopping only when you see a perched or flying raptor with your naked eye. There are some roads (e.g., highways 36 and 93) where this speed is impractical, even hazardous. A possible solution to this problem is to estimate the time you would spend covering that section and stop once or twice along the way so that the observing time is the same as if you had been able to maintain the slower speed.
- Stop to identify the raptor and any other raptors you can see from that point with your naked eye. Do not scan trees with binoculars or scopes.
- Mark initial sighting location (where the raptor was when you first saw it) of each raptor on a topographic map of the route you are surveying. Use the raptor codes on the BCNA Wintering Raptor Survey Report Form to indicate the species. If you are not sure of a species identification, use the UE, UF, UB, or UR codes.
- Complete a survey report form, including the total number of all species sighted, and attach it to the map. Use a separate map and survey report form for each trip.
Mail your maps and completed raptor survey forms to: Sue Cass, 1524 Henry Court, Longmont, CO 80501-2585. If you choose to hold all your maps and forms and mail them at the end of the survey season, please notify me by phone (720) 684-6922 or email (suecass@comcast.net) each time you complete a survey. If you choose to mail maps and forms after each completed survey, please do so promptly.
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Wintering Raptor Survey summary
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