(in pigeon-fancying) a pigeon showing the coloration of the wild rock dove.
（养鸽用语）有野生原鸽色泽的鸽子
Example sentencesExamples
The discussion started as a result of shooting some blue rock-pigeons which were different from blue rocks of other localities.
For each they demand a copper piece; and religious pilgrims consider it their duty to provide the reverend blue-rocks with a plentiful meal.
It is noticeable that the best flying varieties, such as blue rocks, tumblers, dragoons, Antwerpe, triganecas, and croppers, are all rather short in flights, long wings being impedimental to pigeons in their flight, whatever they may be to some other kinds of birds.