Good point.
E.g. Some say scratch (mix of differrnt types of grains/sunflower seeds/ split corn) are a treat.
But if you have 100% free range chickens on lots of sqm2 with abundant growth it’s perfectly fine to give no layer feed at all but only oyster shells and scratch at the end of the day.
I would say (personally) , treats are unhealthy snacks or expensive feed the chickens love but don’t need.
Expensive like:
- mealworms in summer when they can gather enough insects by free ranging.
Unhealthy like:
- Salty and fat food like cheese crust.
Lots of food is not unhealthy if you don’t give a lot. Because the chickens love it, and fight or fly for it, I find these are a treat for them too.
Like :
- Boiled rice and spaghetti because it’s not nutritious. The chickens love it, maybe because they look like maggots and worms
And there is ‘treat’ food they find themselves free ranging in summer that's not very healthy too like:
- Yummy fruits containing much sugar. The chickens get diarrhoea if they eat too much.