Im new to chickens, i bought an incubator and got eggs locally from a lady on FB. She said that she had Rhode Island reds and Easter Eggers in her flock . She said the eggs that were green were the Easter Eggers and the brown eggs were Rhode Islands. Can you tell what breed a chicken is by the color of their egg? Also how do i know they aren't a cross breed of both Easter Eggers x Rhode Island reds?