I'll post some links here so you can do some research, but I would suggest that you also meditate and simply ask what they mean as well. Another forum member, in great wisdom, pointed out to me once that often the simplest method is the path to the most direct answer.

http://www.wicca-spirituality.com/wicca-symbol.html#owl
http://paganwiccan.about.com/od/otherma ... f-Owls.htm
http://www.thewhitegoddess.co.uk/articl ... e/owls.asp
http://something-wicca.blogspot.com/201 ... d.html?m=1
These are some good places to start gathering information on the owl and its plethora of roles. I hope this helps a bit.
