Husk (2011)

A group of college students going away for the weekend crash their car on a deserted road when they are dive bombed by a murder of crows.  When they wake up from the accident, they realize their friend Johnny is gone and assume he went to get help. But as night approaches and he hasn't returned, two others head toward the farmhouse they see in the cornfield.

Once they manage to get to the house, they discover it is deserted.  When a light appears in the upstairs window, they climb the stairs to find Johnny, bloodied and in a trance, making a burlap mask on an old fashioned sewing machine.

When the rest of the group heads through the corn field towards the house, they are attacked by something in the corn.  The scarecrows are kind of creepy and thinking of being attacked while lost in a sea of corn is unnerving.  But overall the film is unsatisfying and the flashbacks don't add much to the story.