Bohemians are bohemians.
Feminine affectation, here refers to posturing.
The story of crow and pigeon
Two birds on the ark, a pigeon and a crow, hope they can find the news that changes the world. After the crow flew out, he saw that everything in the big water was eating and pigeons were flying around. Two or three days later, he finally brought back a new olive branch and told Noah that land had appeared.
As a result, people think that crows eat unclean things (death is the most unclean thing in God's eyes). From then on, crows are considered unclean birds, and pigeons bring back olive branches. Pigeons eat seeds (seeds represent life and are God's favorite), so pigeons are clean birds. So the general meaning of this sentence is: clean and noble pigeons will not be compared with unclean crows, and pigeons will not be kind to crows.