Old Married Couple

Back to my woodland at Longshaw today to check the nest boxes. I have two pairs of Pied Flycatchers in there and as well as lots of Blue Tits, one box with Nuthatches. I suspect that this male and the female in extras are an established couple. They are both ringed and wasted no time in settling into the box. I'm hoping I'll be able to go along when the chicks are ringed