Those are not pure Rhode Island Reds. A pure Rhode Island Red will be much darker in color. Your birds appear to be Production Reds. They are fantastic layers of brown eggs! I have two myself.
Here is my production red....AND my RSL...to compare...def not a RIR
I am throwing the 2nd shot in of the RSL, because I cannot see the hen very well...even enlarged...but first
glance, Production Red