Birds' eyes differ dramatically from ours, and the difference directs lifestyle. Birds have huge eyes, proportionately larger than mammals'. Some birds' eyes equal or outweigh their brains, like ...

The blue-eyed ground dove is one of Brazil’s hidden treasures, tucked quietly away in the country’s tropical savannas. It is one of the rarest birds on ... their bold blue eyes, which are ...

While birds often have vibrant plumage, the dazzling diversity in the colour of their eyes might be just as important for their survival and reproductive success, according to a review of hundreds ...

Not only are avian eyes bigger and better than ours, but they receive color differently. Birds have four visual pigments, instead of the three (red, green and blue) of humans. They break the color ...

Eyes open, then, for foreign feathered things large--and small. For more information about birds and bird habitat, see Sharon Sorenson's books How Birds Behave, Birds in the Yard Month by Month ...

Many types of birds — such as hummingbirds ... are invisible to human eyes. Plumage and body parts of birds-of-paradise glow in certain areas when viewed under blue and ultraviolet, or UV ...

Like most primates, humans are trichromatic—that is, our eyes have three types of color-sensitive receptors or cones: blue ... “big step forward,” offering the most thorough look at how ...