Compassion Investigation Mammals Science 
10,000 Birds
MARCH 18, 2011
Geophagy, the intentional consumption of soil by vertebrates, has long been documented in a number of bird and mammal species – including wide-spread use by humans – which consume soil to increase absorption of certain minerals not naturally occurring in the local diet. That’s right – birds eating clay. Thanks for visiting!
10,000 Birds
MAY 19, 2011
It turns out that humans without compasses make no use of magnetic fields.) Did birds repeatedly evolve migration because they ‘need’ to migrate more than, say, mammals? Annals of the New York Academy of Sciences, 1046 (1), 282-293 DOI: 10.1196/annals.1343.026 2 PIERSMA, T., PÉREZ-TRIS, J., MOURITSEN, H.,
Expert insights. Personalized for you.
255 
Let's personalize your content