Work to be Done

We have a pair of pigeons nest building in the Wisteria. They may be the same pair as nested last year..... Or not. One pigeon looks much like another to my eyes. 
The male has been busy flying back and forth with a new stick each time - the female's task is to arrange the sticks to her satisfaction. The nest looks a bit messy - just like a pile of sticks, really,  which is exactly what it is. It does, though, do the job and last year two chicks were raised successfully.
I hope they have good luck this year too.