Nesting Great Tits

Imagine my joy of discovering a pair of Great Tits setting up home in our nest box. Had to smile when one of them had a small piece of dead grass to big to go in sideways. They have been in and out all day long. This means the grass will have to grow for awhile in our back garden as I don't want to disturb them with a petrol mower. The other 2 shots are one of our resident Robins and a female Greenfinch.