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Why Do Bird Eggs Come in So Many Shapes?

Discover Magazine - Thu 22 Jun 17

When something is described as egg-shaped, the ubiquitous hen’s egg typically comes to mind. But for birds, eggs come in myriad shapes: owl eggs look like ping-pong balls, hummingbird eggs ...

Bird eggs may be shaped by the way their mother flies

Newscientist - Thu 22 Jun 17

Huge survey reveals that bird species spending more time on the wing tend to have long or pointy eggs

Flight demands may have steered the evolution of bird egg shape

ScienceNews - Thu 22 Jun 17

An analysis of nearly 50,000 bird eggs finds a link between a species’ egg shape and flight ability.

How eggs got their shapes: Adaptations for flight may have driven egg-shape variety in birds

Phys.org - Thu 22 Jun 17

The evolution of the amniotic egg—complete with membrane and shell—was key to vertebrates leaving the oceans and colonizing the land and air. Now, 360 million years later, bird eggs come ...

Why do bird eggs come in so many different shapes ? Look to the wings, biologists say

ZME Science - Fri 23 Jun 17

The best predictor of long or pointy eggs is a bird’s flying ability.

The Surprising Link Between Egg Shape and Bird Flight

National Geographic - Thu 22 Jun 17

Why are some eggs round and others pointy? It may have to do with how well a bird flies

L.A. Times - Thu 22 Jun 17

It’s a mystery that goes back to the days of Aristotle, flummoxing biologists and mathematicians for centuries: Why do bird’s eggs come in so many different shapes and sizes? Why are owl ...

Birds' ability to fly could determine the shape of their eggs

Popular Science - Thu 22 Jun 17

Animals Not all eggs are created equal. A recent study has found that birds that can fly have more elliptical and asymmetric eggs. Read on.

Birds' flying ability affects the shape of their eggs

Daily Mail - Thu 22 Jun 17

Researchers from Princeton University in New Jersey discovered that the best fliers tend to lay eggs that are more 'pointy' or elliptical, rather than rounded.

Cracking the egg mystery: what makes eggs round or pointy?

The Verge - Thu 22 Jun 17

Scientists may have just cracked the mystery of why bird eggs come in all shapes and sizes: it has to do with the bird’s ability to soar up in the sky — and the body changes wrought ...

Adaptations for Flight May Have Driven Egg-shape Variety in Birds

Laboratory Equipment - Thu 22 Jun 17

NewsThe evolution of the amniotic egg—complete with membrane and shell—was key to vertebrates leaving the oceans and colonizing the land and air. Now, 360 million years later, bird eggs ...

Adaptations for flight may explain egg-shape variety among birds

UPI - Thu 22 Jun 17

Bird eggs encompass a wide variety of shapes and sizes. Some of that variety, new research suggests, can be explained by adaptions for flight.

As sure as eggs is eggs

Sciencebase Blog - Thu 22 Jun 17

The shape of a bird’s eggs depends on how it flies, according to new scientific results. Sleek birds adapted to streamlined flight tend to lay more elliptical and asymmetric eggs, according ...

How eggs got their shapes

Science Blog - Thu 22 Jun 17

The evolution of the amniotic egg — complete with membrane and shell — was key to vertebrates leaving the oceans and colonizing the land and air. Now, 360 million years later, bird eggs ...

How eggs got their shapes, ScienceDaily - Thu 22 Jun 17
How eggs got their shapes, Eurekalert - Thu 22 Jun 17
How eggs got their shapes, AlphaGalileo - Thu 22 Jun 17