Thanks, everyone, for the input! I am more sure now that he's a boy as he has been singing and not making many "angry budgie" sounds. He hasn't tried to bite my husband or myself once yet either and we have been practicing some step-ups. He seems like he will be a happy little bird here with us
Thanks for the tip about Kaz's post, also, but I am not the one who posted that question about sexing babies in the nest. However -- I did look at Kaz's post before I went to pick out my bird and I agree that it is very informative and helpful. Obviously, I must have learned something since I managed to pick out a boy!