We have had a female barn owl living in a palm tree on our ranch in Northern California for several years.  Every evening when she heads off to work, she circles about our heads and makes her clicking noise ,we like to think that she is letting us know that she is off and to take care of her tree while she is out. Babe does not trouble our chickens or small dogs or even the feral cats with kittens but hunts rodents exclusively.  She has came out of her nest and assassinated a noisy blackbird in mid day when the group was purposely disturbing her rest. About 2 weeks ago, the only other time that I've seen her in day light, she was chased home by a gang of small birds

 

I didn't find the right solution from the internet.

References http://bocn.org/forum/ShowMessage.asp?ID=1392 

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