Could it be a mourning dove? They make a coooo cooooo coooo sound (always 3 coooos!). The first time I hear them I thought it was an owl
I believe there is a picture of one earlier in this thread (brown dove).
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Proud Momma to Pippin, Merri & Sam (A.K.A. The Boyz):love:
Pictures can be seen at [url]www.haakman.ca[/url]
(2yo brown/white tabby brothers)