Americauna/EE's no eggs now for 2 months

Our neighbor gave us her small flock of Rainbow layers, including 6 Americauna/Easter Eggers. When we first brought them home in mid Dec. we were getting the occasional blue/green egg. Since then we have not gotten any. The RIR and Leghorns are laying fine. What's up?? Is this really common? BTW we have had a very mild winter.

 

Thanks for the thought. But I have gone over their area and no pretty blue eggs anywhere.