Dear West Wing,
Could you please advise how to prevent or get rid of owl that had invaded a swiftlet house on agricultural land ?
Thank you.

This post has been edited by dragon's nest: Jul 13 2010, 04:21 PM

Yes, I've read the messages, but just wanted to know if there is any preventing method without having to destroy it . How can I deter them from coming into the house ? It's heart breaking to see our birds got chased and killed in the house at night, and when we tried to get inside to help, the swiftlets flied out from their nests and the owl was more aggressive at the killing.

This post has been edited by dragon's nest: Jul 13 2010, 04:18 PM

Thank you very much, tuckfook and west wing for your answers.
I want to report the result. My birdhouse has window-type entrance with metal spikes installed and I've installed the mercurial vapor floodlight yesterday and the result is : failure. The spikes can prevent only pigeons. The owl did NOT have to perch on anything, it just glided through the entrance, into the roving room, then to the nesting room, tried to grab the birds from their nests, scared them and chased them to the roving room and caught them there and, out , it went. So, the myths about perching before entering, the fear of bright light, the formidable electric zapper are just myths. Also, it did not fly low. It can go to the ceiling for the birds in their nests. So, now our options are fishing net on the entrance after it went in (in this case our own birds are also at risk, and we have to be careful not to fall down too), or the automatic gate. Does anybody have other methods? Thank you.

This post has been edited by dragon's nest: Jul 14 2010, 10:54 AM

Thank you, Cergau. Will try to do that.

Thanks, Bobby C. Have already tried that. Even with 200 mm. spacing, some birds died from crashing into the bars, so had to take them all out.

Thank you, tuckfook.