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Providing evidence to improve practice

Individual study: Impact of barn conversions, with and without mitigation measures, on barn owls Tyto alba in Devon and Cornwall, England

Published source details

Ramsden D.J. (1998) Effect of barn conversions on local populations of barn owl Tyto alba. Bird Study, 45, 68-76


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Provide owl nest boxes (Tawny owl, Barn owl) Farmland Conservation

A small controlled study in 1990-1993 in Devon and Cornwall, UK (Ramsden 1998) found that activity in buildings used by barn owls Tyto alba as nesting and/or roosting sites dropped by 68% in nine areas following the conversion or demolition of the building, but was maintained in three other areas where a cavity and access hole were incorporated into the conversion or another nearby (<50 m away) building. There were no changes in eight control areas.

 

Provide artificial nesting sites for owls Bird Conservation

A small controlled study in 1990-3 in Devon and Cornwall, England (Ramsden 1998), found that activity in buildings used by barn owls as nesting and/or roosting sites dropped by 68% in nine areas following the conversion or demolition of the building, but was maintained in three other areas where a cavity and access hole were incorporated into the conversion or another nearby (<50 m away) building. There were no changes in eight control areas.