The birds fly under the cover of darkness because the air is cool and they can avoid predators. One of the reasons they are able to fly across night skies is because they can navigate using star patterns. In addition, special proteins located in their bills and eyes allow them to sense the Earth’s magnetic fields.
Thank you for this post, but I also have a question that at least relates to migration time. I would like to send you a photo of what may be (or not) a Rufous Hummingbird coming to our feeder today, September 24, (Watkinsville, GA). Is there a way I can do that? Thank you!
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