Hi Sonja: The only review I found didn’t list it as the R-6, Just the EOS-R. That was by Bob Falcone here.
Personally, I’m sorry to see the 7DII go without a good replacement. Canon seems to be concentrating solely on full-frame for their R-series offerings and for bird photography I’ve always liked the extra reach of the crop-sensor. The R-6 has the same number of pixels as the 7DII did but as a full frame, your subject will only be 2/3 the size. Anyhow, that’s my point of view. If you can afford it, I’d look at the R-5 which is getting very good reviews and producing some amazingly good images (or pick up a gently used or Canon refurbished 7DII).