Well, I got it down to when they lay, so today I went out and sure enough, eggs, gathered them up (not alot but) I was met at the door by a hen and roo, she looked right at the eggs I was holding and jumped up and looked in the nest and made a funny noise, to which the rooster responded, kinda low slow sqwak, and they both looked at me, directly at me, like I was a traitor or something...I'm serious! They caught me robbing the nest....I quickly grabbed a handful of chow and tapped the bowl and they were both distracted (of course I hid the eggs under my shirt) and sat there until I was sure their memory was erased, but I swear...they knew