In the past month, there were a few times where I found eggs covered with a yellow sticky substance (no odor). My hens ate an egg once and it was obvious because there were some shell pieces left in the nesting box. However, these past few times I haven't noticed any evidence of an eaten egg (no egg shell left over, not much yellow goo anywhere else but the eggs), so I am led to think it is something else besides the yolk of an eaten egg. I thought it might be worms - I de-wormed in the fall and was planning on doing it again in the late spring, but perhaps I have to de-worm now if this is a sign of worms? Does anyone know what this might be? The hens laying these eggs are 1 year old. Thank you!!