“People more recently have done a lot of artificial selection and are breeding birds that lay different colored eggs,” says Blatchford. “They’ve come up with all different shades of ...

It was very different from eggs we are familiar with these ... but add in the manipulations of color, size, shape and shell thickness, and birds are practically laying golden eggs.

In 2018, they reported in Nature that the eggs from at least some of the dinosaur ancestors of birds were colored. "As with many other characteristics, this is an attribute that evolved deep ...

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.