How Long Have We Been Eating Eggs?

Birds can see up to a hundred times more colors than us, unless you are one of the very, very, very rare humans who is a tetrachromat. We have just three color cones. When Cassie looks at eggs the way birds would see them, she can pick out patterns that seem to be anti-cuckoo security devices. But then onto another type of camouflage, are birds trying to hide their eggs from hungry animals that might want to eat them? And it looks like some of our assumptions might not always hold up. It doesn't look like egg camouflage is as straightforward as we thought.