This is a clearer photo of one of the horned larks I saw the other day. The tufted feathers make up the "horns".
Scientific stuff - Eremophila alpestris
Interesting stuff -The only true lark native to North America, the Horned Lark is a common, widespread bird of open country. Adult Horned Larks eat primarily weed and grass seeds, but they feed insects to their young.