chickens not laying yet?

[vodkalady]

we have 4 month old chickens and they laid 4 small brown eggs a week ago and since then absolutely nothing...what happened? i was told they do not start laying til 5 months. why did they lay 4 and then stop? i am giving them layer mash and oyster shells and garlic powder and cayenne pepper which i was told helps them to lay good

 

[ChickensAreSweet]

Are they bantams?

 

[vodkalady]

no ...they are rhode island reds and black sex links

 

[Fred's Hens]

Do you allow them to roam freely about in the mornings?