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Repeat each survey three times according to protocol. Begin no earlier than 30 minutes after sunset. Use broadcast equipment and 10 minute survey periods. We have a couple of survey points in River Bluffs open space.
Estimated Participants: 2 Estimated Spectators: 0 Hours:
Sat. 03/01/2014: 8 PM - 5 AM
Sat. 04/05/2014: 8 PM - 5 AM
Sat. 05/03/2014: 8 PM - 5 AM
1. Date Submitted: 02/11/2014
Scientific Objectives: Estimate Eastern Screech Owl breeding occupancy and occupancy dynamics to understand the mechanisms affecting these parameters along the Poudre River urban corridor in Fort Collins. Estimate the number of breeding pairs. The dynamic occupancy model allows for the estimation of colonization and extinction rates (MacKenzie et al. 2003). Study Area: The Poudre River urban corridor in Fort Collins runs along riparian forests, floodplain ponds and floodplain grasslands. The river runs for approximately 34 kilometers through the city of Fort Collins (Figure 1). The riparian forest is dominated by three native cottonwood trees; plains, narrowleaf and lanceleaf cottonwoods. Within the flood plain ponds and grasslands there are stands of cottonwoods scattered throughout this habitat type. Eastern Screech Owls breed in cavities or nest boxes within the riparian forest. There are numerous open spaces managed by the city along this corridor that provide suitable habitat for Eastern Screech Owl. Study Design: Sampling will be conducted within 500 meter grids by dividing the Poudre River into 500 meter segments. Samples will be selected using a spatially balanced design. The midpoint of each 500 meter river segment will be the call station. Call play back methods will be used at each call station. Each call station will be visited 3 times between mid-March and mid-May.
Comments: 2/11/2014 Application has been forwarded to area manager for review. 2/20/2014 Fee worksheet was emailed to you today. Your event is approved by our department upon receipt of signed fee worksheet and payment in full. 2/20/2014 Signed worksheet and payment received. Thank you!