Bird by Bird, part 3B

I’d like to continue my series on the Bird Variation now. But first, I need to clarify a little bit of terminology, in response to a comment from Michael Goeller. He suggests calling the whole variation 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 ed 5. O-O g6, which...