I have had 2 Light Brown Leghorns, and the 1st one, who now resides at my parents' house, was soooo small compared to her flock mates. They all grew up and went outside but "Ruby" was tiny still! Her beak was normal size and feathering was complete, she was just tiny. I researched and thought she had to be an OEGB because of her size. Nope, she's a leghorn. Now she is about 25 weeks old and looks like she'll never catch up to other standards but she has gotten bigger. The 2nd one was very small too! Quiet, docile and about half the size of her friend Delaware of the same age, unfortunately I lost her to Marek's Disease before she was fully grown. I have a White Leghorn that I got at 8 weeks and now she is laying, but smaller than the other girls, mostly Wyandottes and Barred Rocks.