Walk or Hop?

I was chatting with one of my bird friends and we realized that we didn't know why some birds hopped and others walked. We have been lifelong bird lovers and it seemed weird that we didn't know the answer to such a basic question.

Well, Google to the rescue:
https://ww2.rspb.org.uk/birds-and-wildlife/bird-and-wildlife-guides/ask-an-expert/previous/hop_or_run.aspx

May you also learn something new today!