I've been offering my cockatiel kale, watercress, romaine lettuce, and cilantro (along with other non-leafy vegetables), but she seems to just nibble on them without swallowing. She'll tear off chunks and nibble, but most of it drops. With other kinds of vegetables (like broccoli, chillies, or sweet potato) I can see that she swallows some. Can you guys tell whether your bird swallows leafy vegetables? I've tried processing them too, but it's still the same.