Hi there. I have 2 Buff Orpingtons named Stav and Aviv, and one Silver Laced Wyandotte named Elvira. I'm watching them do their chickenly thing and I'm noticing that Elvira, while slightly smaller, seems to be maturing faster. Is this common for the breeds they are, or is Elvira just a fast grower? She's got her little rose comb and is making a sound between a bawk and a cheep, hilarious.