My father found this little guy in one of the tractors of where he works (in the fields) i’m not sure what species of bird it is and what it eats. It just keeps chirping not stop and I have no clue what so ever to what it eats. If anyone knows please tell me, I don’t want to see him starve to death.
Based on the photo, it looks like you have a fledgling American Goldfinch (Spinus tristis). Here's a photo of an adult female feeding a young goldfinch. This link has dietary information.
I would suggest contacting your local Wildlife Rehabilitation Centre or leaving the young guy where he was found. He could of jumped the nest a bit early, but typically the parents are always nearby.