Wendy,
   I collected window kills at the State Center on Preston Street for many years.  Common Yellowthroat was one of the more common dead birds that I found.  To the best of my knowledge they do not migrate in pairs.  The other most common window kills were Ovenbird in September and White-throated Sparrow in October.  I believe the lights have little to do with the bird collisions.  Songbirds are seeking shelter in the morning after flying all night and large plate glass windows look like a sheltered place to rest.  I actually watched this happen one morning when an Ovenbird flew across in front of me and hit a window.  It was dead within seconds.  It was not flying fast but the skull is so thin that a fatal concussion is the usual outcome.
   By the way, could you give us some more details about the Summer Tanager?  That would be an extraordinary find in Baltimore.  And the Bobwhite.  How did that get there?


>
> From: Wendy Olsson <>
> Date: 2004/10/18 Mon PM 05:41:35 EDT
> To: 
> Subject: [MDOSPREY] Downtown Balto sightings, behavior question
>
>

Bob Ringler
Eldersburg MD