Hello, I have 3 ameraucanas that are all more or less 8 weeks old. They were purchased as pullets from cackle hatchery. At around 2 weeks of age, one started showing more of a red comb than the other two. Now at 8 weeks of age this same bird(Lucille)is the only of the three with a three rowed pea comb. The other two have one row pea combs. My suspicion is that Lucille is a rooster because of the following:
Here are some pictures of Lucille and the other ameraucanas:

Above is Lucille(middle), Cookie(left), Maggie(right)

Above is Lucille compared to the rest of the flock


A closer look at Lucille

What do you guys think she is? I'm getting mixed results researching about this.
- Started crowing recently
- Considerably larger than others
- "Filled out" neck plumage
- Dominance over others
- Somewhat pointy saddle feathers
Here are some pictures of Lucille and the other ameraucanas:
Above is Lucille(middle), Cookie(left), Maggie(right)
Above is Lucille compared to the rest of the flock
A closer look at Lucille
What do you guys think she is? I'm getting mixed results researching about this.