You really discarded eggs because some gadget told you they were boys? And this gadget says you have only 2 boys out of 85 chicks? How old are these chicks and how did you verify the accuracy of this 'thingy'? Are the chicks grown out sufficiently to confirm gender, or did you vent sex them all? If this gadget is this accurate, I want one, too!
Silkies can't be feather sexed--no breed can unless it has specifically been bred for that trait. You really can't tell the gender on most breeds until they are a few months old and the roos start growing in spikey saddle feathers and get larger combs/wattles than the girls. Silkies though are especially hard to sex and it can be difficult to sex some for sure til they either start crowing or lay an egg.
