Lichen 4

I cannot find a name for this one.  It is common in places with a high rainfall, but so rare here that this is the only specimen I have found in my garden.  It is growing in a place where birds like to perch and I brushed away a considerable amount of poo before taking the photo.  Found on the top rail of a south-facing fence.

Best in large.

Lichen 1
Lichen 2
Lichen 3