thanks penny1947, I look forward to spotting one in my area. Spring is coming!

John Bull in his "Birds of New York State" has a section on migration of Redwing Blackbirds. I used this as a reference in a biology course I audited after retirement. Here is an excerpt from what I wrote:

During the spring migration, 100,000 were recorded at Montezuma on March 22, 1958. In the early 1900's Arthur Allen kept a three year record of Red-wings migrating through Ithaca. From their plumage he was able to distinguish males from females and adult birds from those hatched the previous year. The record he reports is for 1911 and as he remarks the actual dates will vary from year to year, but the order in which the males and females, migrants and residents will remain. (I wonder if there has been any significant shift in the 80 years since Dr. Allen made his study.) Here is what he found: males arrive on the scene, followed two weeks later by the resident females. The migrants that appear are presumably on their way to Canada while the immature birds that will take up residence may have been searching for green pastures.

That was a very good article. thank you for sharing that with us.

penny