A sliver of blue catches my eye. Ah, a robin?s egg. Flipping it over, I see the inside, white and clean. The egg hatched. Somewhere nearby is a nest full of hatchlings.Like many other birds, robins remove the eggshells from their nests, taking them away from whatever tree they are using. The necessity of removing the shells, I think, goes without saying; it?s a matter of taking out the garbage. However, unlike ...