You’ll likely find two types of parsley – flat-leaf and curly-leaf – at your local markets. Both are fine to feed and though similar in nutritional properties, vary in taste just a bit. You’ll notice more flavor with flat-leaf than you will curly-leaf, but your gliders won’t care.
Look for bunches of parsley that have no brown or slimy leaves. This would indicate that the bunch will soon be turning and needs to be used immediately. A fresh bunch of parsley will last for several days in your crisper drawer and can be used more than once. Simply chop and mix in or sprinkle on top of your fruit and veggie mixture!