Stock photo of wooden nest box in woodland, in shady spot

Stock Images / Photos of Nestboxes (Birds)

Stock image of wooden nest box in woodland, in shady spot

Royalty Free Images - Filename: nest_box_birds_tree_7.jpg

The nest box has an entrance hole of just 25 mm, being designed for the sole use of blue tits, which are the main birds small enough to enter through a hole of this size. A slightly larger hole with a diameter of 28 mm is needed to attract tree sparrows and great tits, while house sparrows and nuthatches need holes of 32 mm.

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