Increasing Capture Frequency for Flammulated Owls and Northern Saw-Whet Owls During Fall Migration
We have been banding individuals Psiloscops flammeolus and Northern saw-whet owl during the fall migration in Idaho since 1998. Our mist nets hearing lures are located within forests Pseudotsuga menziesii with very little undergrowth. During the fall of 2011 we observed some individuals of P. flammeolus within dense patches of deciduous shrubs mountain located up to 100 m away from the ear lure. Therefore, half of the 2011 season, experimentally mist nets placed within these dense deciduous shrub habitats to assess if we could increase the frequency of capture P. flammeolus, which is listed as a species of concern by most state and federal agencies within its breeding. Standardize the protocol for the seasons of 2012 and 2013. The mist nets were placed in dense thickets catch rates of P. flammeolus of 7-21 times higher than our traditional mist nets placed in the understory, suggesting that the site of networks in this habitat may be valuable for studies of annealing. Although our primary goal was to increase the catch rate of individuals of P.flammeolus also documented a smaller increase in the rate of capture of A. acadicus in the same networks.
Pollock, Jessica; Carlisle, Jay D.; Runco, Chad; and Kaltenecker, Gregory. (2015). "Increasing Capture Frequency for Flammulated Owls and Northern Saw-Whet Owls During Fall Migration". Journal of Raptor Research, 49(1), 88-92.