An Israeli film depicting the advantages of using barn owls and kestrels in place of pesticides won first prize in an international film competition that concluded on Friday. The 2010 film, called The Use of Barn Owls and Kestrels as Biological Control Agents and produced by Yuval Dax, topped the charts in the expert and instructive films category at the Agrofilm Festival held throughout last week in Nitra, Slovakia, the Society for the Protection of Nature (SPNI), announced on Monday.