I may be wrong, but I reckon that numbers 2, 10, 14, 24, 29, 31, 32, 45 & 60 are at least partially out of date now, with more changes due shortly.
I was going to write that maintaining a zoo map is a bit like painting the Forth Bridge, meaning that it's a never-ending job - but I believe that they have now painted the bridge with a new formulation which is so durable that they don't need to paint it continuously. On the other hand the pace of change at Chester seems to get faster and faster. I am sure that SMR already sighs nostalgically each time he reads the words 'Fountain Lawn'
@gentle lemur Sigh... and they couldn't even get the name right. These days I call it Verruca Creek, I'm hoping to get that to stick as a small form of payback.