Study

Selection and use of nest sites by barn owls in Norfolk, England

  • Published source details Johnson P.N. (1994) Selection and use of nest sites by barn owls in Norfolk, England. Journal of Raptor Research, 28, 149-153.

Actions

This study is summarised as evidence for the following.

Action Category

Provide owl nest boxes (Tawny owl, Barn owl)

Action Link
Farmland Conservation

Provide artificial nesting sites for owls

Action Link
Bird Conservation
  1. Provide owl nest boxes (Tawny owl, Barn owl)

    A before-and-after study at a 150 km2 site in Norfolk, UK (Johnson 1994) found that barn owl Tyto alba population density increased from 15 pairs/100 km2 in 1989 to 27 pairs/100 km2 in 1993, following the provision of 60 nest boxes. Nest boxes were used at the same rate as natural nest sites, and pairs using boxes in trees produced more eggs (but not significantly more fledglings) than other nest types. Nest boxes were located in buildings (43 boxes, a maximum of 11 used in a single year) and on trees (17 boxes, a maximum of five used in a single year).

     

     

  2. Provide artificial nesting sites for owls

    A before-and-after study at a 150 km2 in Norfolk, England (Johnson 1994), found that barn owl Tyto alba population density increased from 15 pairs/100 km2 in 1989 to 27 pairs/100 km2 in 1993, following the provision of 60 nest boxes. Nest boxes were used at the same rate as natural nest sites, and pairs using boxes in trees produced more eggs (but not significantly more fledglings) than other nest types. Nest boxes were located in buildings (43 boxes, a maximum of 11 used in a single year) and on trees (17 boxes, a maximum of five used in a single year).

     

Output references
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