Bathsheba, without looking within a right angle of him, was conscious of a black sheep among the flock.
Interesting to use "black sheep" as a metaphor in a book that often discusses literal sheep and shepherds... So Bathsheba has found a man who is a black sheep here (based on what? his appearance?), but she -- as a woman -- is also a black sheep in this setting and the overall profession. And perhaps the "sheep" whom Farmer (shepherd) Oak hopes to claim
