Treats are fine and it sounds like you are giving them treats correctly.I know so many members on here are "anti-treat". They consider everything that is not a true chicken feed a "treat". My flocks get a handful of scratch/mealworms/sunflower seeds in both the morning and evening. To me that is nothing different then they would get if they free ranged naturally. They would be scratching up worms, they would be eating seeds from various weeds and flowers, and if there was a cornfield near by you know they would be in that. I think there is more to the disease then just being diet based. Regardless, Betty's disease must have been hereditary because she wasn't even a year old yet. I know her breeder did not give "treats" and I never did because her and her flockmate would turn their nose up at the offer.
There is actually a treat guideline. Look at the table scraps guideline. It says to give them what they can eat in 10-15 minutes.
The problem is that some give too much and it cuts their nutrition. The hens then become un healthy.
I only have 2 pairs whereas I had planned on four. Ugly Betty died; I had planned to put her with Cholo to hatch some funky blue duckwings. I feel Bonita is still too small to take on a breeding task, so her and the bantam Lil' Girl are in a bachelorette pen. I moved Buck in with Bluebell. It went amazingly smooth! As much as he wing-danced her through the fence I thought for sure he'd be rough with her at first. But he was actually scared of her for the first half hour. At one point he found a seed on the ground, tid-bitted to her, and as she ran up to get the treat it scared him and he ran off
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