The Food Fight, Bird Style

When we expected snow, Jim filled up our bird feeder, but didn't set the weight limit to a squirrel's weight.  It's a beat up old bird feeder, but it still works.  By January 30th, the snow had melted, but the birds were still enjoying the seeds.  I think the big bird with a brown head and dark body is a cowbird and the small bird with the yellow beak and black stripe across the eye is a male house sparrow.  Best guess.  Any experts out there?  Watch what happened!