A new study found that birds' dinosaur relatives had eggs with traces of two pigments—a red-brown one and a blue-green one. In today's birds that might produce a color such as robin's egg blue.

Birds that don’t have plain white eggs will often be ones that put their nests on the ground and they’ll have speckles on them, little brown speckles or other colored speckles, so you could ...

Since the strength of egg shells depends on calcium, birds with low calcium in their diets have thinner and more fragile egg shells. But the reddish-brown speckles on eggs don't require calcium at ...

Some birds lay colorful or speckled eggs, and others lay eggs with plain white shells. Keep scrolling to see how 10 different birds build their homes and nest their eggs.

In spite of their diversity, bird eggs derive their color from just two pigments: protoporphyrin, which produces a reddish-brown color, and biliverdin, which creates blue and green.

Blue or speckled, tiny or large, bird eggs fit nature's design. Subscribe. Log In. Minnesota News ... Red-winged blackbirds lay pale blue-green to gray eggs with black or brown markings in their ...

TEANECK — A small migratory bird has found an unusual place to make her nest: near the south goal of an artificial turf soccer field in the township’s busiest park. The killdeer, a brown bird ...

Four speckled bird’s eggs and a very protective… Share this: Click to share on Twitter (Opens in new window) Click to share on Facebook (Opens in new window) Click to print (Opens in new window) ...

Easter Egg. The First Colored Eggs Appeared Long Before Easter The dinosaur ancestors of birds laid blue, brown, and speckled eggs as far back as 150 million years ago.

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Quail eggs are like fingerprints, a new study suggests. The creamy blue-and-brown speckled ...

Since the strength of egg shells depends on calcium, birds with low calcium in their diets have thinner and more fragile egg shells. However, the reddish-brown speckles on eggs don't require ...

The rainbow of hues seen in modern bird eggs probably evolved in birds’ dinosaur ancestors, which had eggs with colorful and speckled shells. That’s according to a new study of fossil eggs in the ...