Nest boxes for tree sparrows
Twenty-two nest boxes have been installed at the breeding colony sites, with seven other nest locations available, such as in the barn walls.
In 2006 it was estimated that fifteen broods fledged from seven or eight pairs (tree sparrow can have more than one brood each year), producing around 60 youngsters.
The colony is thought to have doubled in size since the nest box scheme started.
Now that the status of tree sparrow in the Vale is looking more promising, work is planned to identify more colonies in the Vale and to find out more about the wintering habits of the tree sparrow.
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