Every single bird you have ever seen hatched from an egg.  Thus, eggs are an essential aspect of pediatrics in birds and therefore can provide important information about the health of birds at this critical stage in their life cycle.   John Bates, Curator of Birds at the Field Museum, will highlight the Field’s egg collections and how they have been and are being used in research ranging from the effects of pesticides to response to climate change.  There is so much we can learn and so much we do not yet know about the avian egg.