DM's back garden is enclosed, it's a semi detached house backing into other gardens with 6ft fences all the way around.
At first I was thinking owl despite the dog poo like appearance as it seemed to just dotted along the path under the washing line and a few where it could perch (fence) but I've noticed a few other bits on the garden. A google search has given me the idea of either a fox or badger. Can a fox scale a 6ft fence? I'm not sure it could crawl under the gaps at the bottom of the fence either. Dm has a shed in the garden so could possibly be housing badgers underneath.
Notice the seeds but there doesn't seem to be any fur/bones from small insects or rodents.
There was also another two piles that are possibly from birds who nest in the roof tiles as these droppings look as though they've be regurgitated. Hopefully I'll be able to post all the pictures...
I can only post 3 pics so these are the mystery poo's