That is a Lark Bunting, Colorado’s State Bird. It looks like it is a breeding male, with its Striking white stripe on its wing while Non-breeding Males and females are usually a streaky brown. It generally lives in shortgrass prairies where they feed on insects and seeds. Sometimes, if you are lucky, you can see them gather in huge flocks in the winter. I myself haven’t seen one yet, but it is on my bucket list. Very cool!