I think this is a young black-throated grosbeak, but wanted to check for sure.
Is the second one the same or a song sparrow? Both were photographed in Colorado.
Two for identification..
Chillybean Near Central, IA(Zone 5a) Aug 18, 2012
I think these both are Lark Sparrows. The facial markings and black spot on the chest look a lot like this bird.