Hy-Line Browns are our best brown egg layer. Their eggs are a very consistent color and size. They are very feed efficient, have excellent egg quality and excellent livability. Hy-Line Browns are very similiar to ISA Browns being it is also a cross between a Rhode Island White female and a Rhode Island Red male. In the event of a hatching egg supply issue, Hy-Line Browns may be substituted with Lohmann Browns. We will make note of the substitution on your packing slip sent with your order if this would happen.