Blue-footed boobies dirty their eggs to hide them from predators
![blue footed booby and two eggs](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/09/wt_boobybanner_free.jpg?fit=860%2C460&ssl=1)
The blue-footed booby lays its bright white eggs on the ground, where they are easily spotted by predators. A new study shows that dirtying the eggs helps camouflage them.
Jo Simon/Flickr (CC-BY-NC 2.0)