Like other birds, they carry the food to their young externally.

I had interpreted this as meaning B) like all other birds and was beat to the regurgitation post by OT.

I've seen a few bird documentaries and the birds were fed by regurgitation. I had thus wrongly assumed, as I see now, that chicks were like humans in that they had to be fed mush before solids. I now see it depends upon the bird type.

Dunno why, but I find that stuff interesting.