Wrens at a sparrow box in mid-January – are they roosting or thinking about a nest site? And what will happen when the resident blue tit returns?
In the sequence where the two wrens are hopping around on top of the box, it looks as if one of them has a small green caterpillar in its bill. This could be courtship feeding, so the tour of alternative nest holes might be the male giving the female a tour of possible nest sites.
Wednesday 13 January, Barbara’s diary: Some day we will get it right for the birds!
First we put up a blue tit box and sparrows nested in it, so we replaced it with a sparrow terrace with three nest holes and the blue tits nested in it.
Now the blue tits are sub-letting to a group of wrens.
As I went to make our morning cuppa, passing the back door something caught my eye, I looked out at the sparrow box and in the half light could see a little head appear from hole number one. I was amazed to see a wren fly out and it was quickly followed by three more, they had obviously been using it as an overnight roost.
We had spotted a wren yesterday coming out of hole number three, while at the same time a blue tit was taking great interest in hole number one. Another blue tit attempted to investigate the middle hole but the one at hole one in no uncertain terms let it know it wasn’t welcome, although it didn’t seem bothered by the wren.
It would be lovely to think that we could have blue tit and wren making a nest in the terrace this Spring and a bonus would be a sparrow in the middle. Well, who knows what will happen with these contrary birds!
Barbara Bell
Saturday 16 January, 4.45 pm: I’d seen a wren hopping about on the hedge but it was taking its time coming over to the nestbox. That changed when a blue tit flew over an perched at the left-hand nest hole. Within seconds the wren was there, perching on the edge of the box and, in no uncertain terms, letting the blue tit know that it wasn’t welcome.
The wren popped into the hole for just a few seconds before flitting out again. We don’t know if there are any wrens roosting in the box tonight. On previous nights we’ve seen three going in there as darkness falls.