. so much reading still dont know what to deo fo her.......One of my adult chickens. buff orps supp to be over 2 yearsold. vent area are hardly any feathers, kinda red. standing around lots puffed up they( all in that group )are underweight. they refuse to eat the dang pellets I bought. pellets are rather large, too.all 3 ophs have lost lots of their feather, all thin like .... Sprayed their house for bugs with a lemongrass natural spray. but not messed with the chickens themselves. except gave them"Safeguard' dewormer goat dewormer. Also cleaned their scaley legs and put on Vaseline. cause they all have raised scales on their legs...... I also put food grade DE in their coop. I gave them all dose of "Safeguard" last week finished third dose. but as read it does not get rid of roundworm.......how big are round worms?