Hi Nancy! I cannot answer your question but here is what is happening with robins where I live. I live on LI in NYS. For the last couple of years I have noticed that robins have not been migrating but rather they stay here during the winter which is fairly cold, except for this year. I have been wondering why they no longer migrate and if they migrate in any other part of the country. It's very odd. I wonder if this caused by climate change. We have the same situation with Canadian geese. They used to migrate here from Canada but I think for at least the last 15 years, maybe more, they no longer migrate. They have become permanent residents.