It is difficult to tell from the picture, but these starlings were juveniles as they were brown with black beaks. They made the harsh trilling call that adult black european starlings make, which led me to the conclusion that they were younger birds. There were a ton of them all over the field in a giant flock with adult starlings among them.
The European Starling, Common Starling or just Starling (Sturnus vulgaris) is a passerine bird in the family Sturnidae.