I too have heard of this OBOL and have always wanted to sleep outside to experience this. Sometimes have thought I heard this but it isn't sustained enough to distinguish if I'm just listening too hard. Mark ________________________________________ From: umpquabirds-bounce@xxxxxxxxxxxxx [umpquabirds-bounce@xxxxxxxxxxxxx] On Behalf Of Keith Phifer [plfer9381@xxxxxxx] Sent: Sunday, September 01, 2013 6:12 PM To: umpqua birds Subject: [Umpqua Birds] Night sounds Every year I see people report hearing multitudes of Swainson Thrush migrating over their homes at night. I try to go out and listen and usually hear nothing. This morning at 5:30 am before first light I went out to get the newspaper and I heard a couple of interesting bird sounds. One of which I had no guess, but the other made me think of those observations I have read about in the past. I could not tell if the sounds were coming from flying birds or not in the dark, but I was hearing several high pitched "wheet" types of calls that made me think of thrushes. Is that the type of call they make when flying in migration and is the timing right? Following the golden crowned sparrows the other day, this morning an immature white crowned sparrow was making a lot of noise calling in my yard. I know Matt spoke of noticing these sparrows dispersing several weeks ago, but I am just noticing them here. Keith