The picture of these two Black Vultures was taken at the CREW Bird Rookery in Florida. The picture of these Black Vultures was taken with the CANON EOS 7D and the CANON 100-400 lens.
Male and female Black Vultures are identical. There is no external way to differentiate them. Black Vultures are strongly monogamous and they both tend to the nest. So these are two adult Black Vultures that I want to say are a pair and claim that beauty is in the eyes of the beholder.