All those birds

Starlings or grackles, not sure which, everywhere
 

I snapped the above picture at about 8:30 yesterday morning. Huge flocks of these birds - either starlings or grackles, not sure which - are a common site this winter.  One morning I counted a massive flock heavily dispersed in the tops of 10 trees in my yard.  The bunch in these pictures landed in the back yard and pecked away in the grass like they were at a feast.

It is common to see flocks of birds like this in the fall and spring, but I don't remember seeing them all winter.  Apparently flocks like this have become common all over the country.  Some of the beef cattle newsletters and magazines I read are reporting on the economic loss these birds are creating in feed lots.  They report the birds stealing the grain from the cattle - and not just a little bit here and there. Reports have them all but taking over the feed bunkers!  Is anyone else out there thinking Alfred Hitchcock!