I have 6 RIR, 3 bantams, and 1 RIR rooster. All of a sudden, the 3 bantams quit laying (about 4 weeks ago)....about a week later I got the rooster, and they still arent laying. The 6 RIR are still too young....about 15 weeks old, but I have no idea why the 3 bantams stopped. I recently (4-5 days ago) switched the food to a mix of grower and 3 grain scratch, with oyster shell free choice. To top it all off, the 5 month old rooster still hasnt crowed the first time! I dont know what the heck is going on. Can anyone shed some light on the subject? Thanks.