Sat in the heat this afternoon and shot some hummingbirds and compared the 5DMKIV to the 5DRS. Autofocus seemed to perform better on the MKIV and definitely had a higher rate of keepers, but the extra pixels on such a small subject helped when the 5DRS did give a good result. First two pics are 5DMKIV, last one is 5DSR. Both with 600II + 1.4XIII and fill flash at ISO800, f 5.6.
On registering my new "Squirrel Buster" feeder, discovered it was made in Canada! Not surprising, considering the huge number of birders there, out of proportion to the size of the population, it seems from CR and FM.I once saw a male Bullfinch in my garden, but coming back from a walk with my camera at hand, I saw a female Bullfinch on a new feeder - the first time I have ever seen a female anywhere. Then the male came along. They both returned in the evening - it's rather exciting. I am wondering whether the design of feeder makes a difference. The old one had a cage around it to keep the squirrels out, which might have inhibited the Bullfinches? The new one is squirrel proof without a cage.
Reminded me of my late uncle's favourite saying "jeepers creepers".