The biocompass — whose constituent proteins exist in related forms in other species, including humans — could explain a long-standing puzzle: how animals such as birds and insects sense magnetism. Long Sought Biological Compass Discovered - Scientific American
Motherhood. / how much sacrifice must this mama bird make by standing with them on the branch til they are ready to fly? May we remember this bird when we get tired of our teen-age children as they are about to leave the nest, and keep on being loving !