My first Americauna egg

I have no idea which of the two laid today's egg.  Yesterday afternoon when I opened up the windows both of them were checking out the nest boxes so I came in and checked their age.  They are only four months old and so this is early for them.  Both are doing fine but are like watching Laurel and Hardy (of which had I known would have named them)  Maybe they will be the Bobsey Twins.  Bossy Bobsey and Tizzy Bobsey...  As they go everywhere together and are always side by side.  Can you tell which one it is?  The small egg bottom right.