If you look at the bland and buff-colored juvenile gallinules, you never would imagine that they would turn out to be colorful birds! Once they grow up, they start flaunting their fluorescent ...

Whether you are part of the 33 percent of people who take pleasure in seeking rarely-seen birds and spotting hints of color ...

This story appears in the January 2018 issue of National Geographic magazine. If birds left tracks in the sky, what would they look like? For years Barcelona-based photographer Xavi Bou has been ...