451. Notes on the vocalizations of Ethiopian Bee-eater (Merops lafresnayii) and Blue-breasted Bee-eater (Merops variegatus)

In the following text, I briefly analyze and compare the voices of Ethiopian Bee-eater (Merops lafresnayii) and Blue-breasted Bee-eater (Merops variegatus). I also try to quantify the extent of any vocal differences using the criteria proposed by Tobias et al. (2010), as a basis for taxonomic review. I have made use of sound recordings available online at Xeno Canto (XC) and the Macaulay Library (ML).