Acoustic luring of avian prey by Northern Shrikes

Both male and female Northern Shrikes sing in winter from exposed territory-advertisement perches as well as from perches low and hidden in brushy vegetation, and it is from the latter habitat that the acoustic luring of prey is thought to be most effective. Researchers have found that Northern Shrikes continue to sing until a curious prey item, such as a chickadee or a junco, is within approximately 1 m. The shrike then abruptly stops singing and readies itself for an explosive chase through the tangles. Could you imagine being a little songbird peering through twigs and vines and coming face to face with that black mask and massive, hooked bill?

Further reading on the acoustic luring of prey: https://sora.unm.edu/sites/default/files/journals/condor/v099n01/p0203-p0206.pdf