Zanna
Songster
Late Fall - Spring I have scrub jays steal eggs, used game cameras to finally figure out what was going on. If the eggs have a nice strong shell, the birds can carry them off and leave not a trace........Probably what Fred said...but kind of odd to get absolutely zero out of 16 birds. Should be at least one or two birds dropping one here and there.
It may sound far fetched but I've heard of folks having rats stealing eggs this time of year. Got rodent problems at all? Any human preds in the area who would relieve you of your eggs?
I never get too disturbed by a drop in egg production this time of year....like Fred, I just expect it between Sept and Dec and don't try to do much about it. Everyone needs a slow down in the winter, why not these hard workin' gals?