This is about a very interesting and informative article. “ The identification of North American Accipiters”. Seventy- man years of watching and trapping: How to, and how not to, identify accipiters— Helmut Mueller, Daniel Berger, and George Allez.
This you will not find in the article: Wing shape, wing holding, and wing movement. In other words, the article is about a dead specimen or an inactive bird.
The authors do write of wing speed compared to wing length and wing structure. I say— wing speed can depend on many factors, however wing speed is only a small part of wing action. This article will open the eyes of many birders. However, this article is not about hawk watching. NB.
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