They can swallow a whole pill, even a really big one, just fine. They can swallow frogs, lizards, etc, a pill is not a problem. Just pull down on her wattles to open her beak, put the pill in and push it back a little, she will swallow it. If you don't get it quite far enough back and she spits it out, try, try again. It's actually pretty easy. If you mix it in food they will often avoid it or refuse it. It's easier to just give it directly, and you know they got the whole thing.