Such a seemingly innocent question! And, yet...so perplexing! Do you have the answer?
I think I'll just go with Aristotle's viewpoint (from Wikipedia):
Aristotle (384–322 BC) was puzzled by the idea that there could be a first bird or egg and concluded that both the bird and egg must have always existed:
If there has been a first man he must have been born without father or mother – which is repugnant to nature. For there could not have been a first egg to give a beginning to birds, or there should have been a first bird which gave a beginning to eggs; for a bird comes from an egg. 
Come join us every week, as a group of us from around the world post our shadow shots over at Shadow Shot Sunday 2. Entertain your muse and be amused by stopping by to see what others have posted!
Post Script: I was 'missing in action ' last week, for sure. My Daddy passed away on April 3rd at 11:05 PST. He had made a decision to stop dialysis. Oh, how I will miss him...my heart aches to lose him, but he was truly ready to go. God Bless My Daddy.