This time of year, I feed my poults chopped Romaine lettuce - per World's Healthiest Foods:
NutrientDRI/DV
vitamin K107%
vitamin A45.4%
folate31.9%
molybdenum12.5%
fiber7.8%
manganese7.5%
potassium6.6%
biotin5.9%
vitamin B15.8%
copper5.5%
iron5%
vitamin C5%
vitamin B24.6%
omega-3 fats4.5%
vitamin B64.1%
phosphorus4%
chromium3.5%
magnesium3.2%
calcium3.1%
pantothenic acid2.6%
Wow this really has everything.