Two greenfinches which are rare visitors

I had to grab this quick snap through the patio doors with the olive tree's leaves somewhat obscuring the view. I saw the two greenfinches on the sunflower feeder and knew that they would fly away if I opened the doors. As it was they only stayed a very short time. I haven't seen greenfinches in our garden for many months and at any time they are rare visitors to our patch. Two at once is even rarer. I'm glad to find they are in the vicinity.