Age-related response to playback of calls of sharp-shinned hawks (Accipiter striatus) by American redstart (Setophaga ruticilla) males.

BirdsAbstract We investigated whether the response of American Redstart (Setophaga ruticilla) is influenced by age. We recorded song rates before and after playback of a Sharp-shinned Hawk (Accipiter striatus) call, and how long after playback redstarts took to sing again. Our results showed no significant differences in response between first year and second year males, but significant reduction in song rate for all redstarts was found immediately post-playback. Future studies should further explore the relationship between response of different aged American Redstarts males and calls of potential predator classes.http://deepblue.lib.umich.edu/bitstream/2027.42/101746/1/Dou_Langenburg_Mooney_Pad_2013.pd