Some species of birds, such as the zebra finch and the Columbidae, use the ultraviolet wave-length 300–400 nm specific to tetrachromatic color vision as a tool during mate selection and foraging.[9] When selecting for mates, ultraviolet plumage and skin coloration show a high level of selection.[10] A typical bird eye will respond to wave-lengths from about 300 to 700 nm. In terms of frequency, this corresponds to a band in the vicinity of 430–1000 THz.