On a windy spring day in Iowa, the American goldfinch frequently darts through the gray sky with a quick burst of yellow and ...

When COVID-19 lockdowns emptied city streets, urban environments changed almost overnight. New research suggests that Los ...

Over the years, scientists have learned about literally thousands of different bird species, and each one sports a distinctive beak shape. But why do bird beaks come in so many different shapes and ...

From the almost perfectly spherical eggs of the brown hawk owl to the pointy eggs of the sandpiper, there is a surprising variety in the shape of bird eggs. Yet why birds lay different shaped eggs has ...

The ability of birds to fly more efficiently by changing the shape of their wings has inspired a number of approaches to developing low-energy aircraft. If this technique can be replicated, where ...

The northern cardinal seems an obvious choice for Indiana’s state animal. Its vivid red feathers stand out against winter ...

National Bird Day 2025 highlights how bird population changes reveal environmental stress and ecosystem health worldwide.

Q. I saw a photo of different kinds of bird eggs and noted not only the obvious, that smaller birds lay smaller eggs, but also that some bird eggs are elongate, whereas others are more rounded. What ...