Participant Photo: the identification of a Blue Jay, one after the other.

As many as 8 Blue Jays arrived, simultaneously today.
So, I decided to take as many pictures of them in various positions as they arrived to feed..
out of the 8, I now can properly identify at least 3. by name..The picture submitted the first one..is the enlarged
picture..The patterns.. Simply amazed me..
I, have cataracts. so.I decided to catalogue my visitors..so that I may recognize them.at a later time when I can
see the patterns in their feathers..
For now, I ,hope their winter plumage will not drastically change..
Any comments..on patterns of bird plumage, and the notion that one can identify them with some accuracy
would be appreciated..