As to your brown laying EE, there is zero chance she will have chicks that lay blue unless you have a rooster that has a blue gene to pass. Sorry.
That is the disappointment with EE looking birds....EEs are technically mutts as they are a mix usually from Ameraucana blood from some parent at one time.
However due to the genetics of a chick receiving 50% of its genes from each parent, if a parent is not pure Ameraucana there is only one blue gene to pass down and one empty slot. 50% get the one blue gene and will lay blue toned eggs with that and 50% get the empty slot so no blue shell (no coding to throw bile in at the shell gland) but will lay base white. (Brown is altogether different genetic coding covered by about 13 genes that code for how much hemoglobin paint is placed on the shell down the egg tract....brown paint on white shell, brown tone eggs....brown paint on blue shell, green tone eggs.)
Still pretty hen who should pass some pretty plumage patterns if you don't breed to dominant white and will pass some brown tone genetics.
LofMc
That is the disappointment with EE looking birds....EEs are technically mutts as they are a mix usually from Ameraucana blood from some parent at one time.
However due to the genetics of a chick receiving 50% of its genes from each parent, if a parent is not pure Ameraucana there is only one blue gene to pass down and one empty slot. 50% get the one blue gene and will lay blue toned eggs with that and 50% get the empty slot so no blue shell (no coding to throw bile in at the shell gland) but will lay base white. (Brown is altogether different genetic coding covered by about 13 genes that code for how much hemoglobin paint is placed on the shell down the egg tract....brown paint on white shell, brown tone eggs....brown paint on blue shell, green tone eggs.)
Still pretty hen who should pass some pretty plumage patterns if you don't breed to dominant white and will pass some brown tone genetics.
LofMc