Forth Rail Bridge in and out of the fog

Went off to capture the 1st, 2nd and 3rd Forth bridges in the fog.  Chose this one as I'm always amazed that something so large and vibrant-coloured can just disappear.
But then I heard the call of the curlew, so went down to the shore. I noticed 2 on a rock, (extra 1) although they were a bit foggy.
Extra 2 and 3 - they decided to have a spat - images are foggy and have camera shake, but I've never seen curlews argue with each other before. 
Extra 4: the slightly ruffled victor.